Overview

The objectives of our Management's Discussion and Analysis of Financial Condition and Results of Operations ("MD&A") are to provide users of our consolidated financial statements with the following:



•A narrative explanation from the perspective of management of our financial
condition, results of operations, cash flows, liquidity and certain other
factors that may affect future results;
•Context to the financial statements; and
•Information that allows assessment of the likelihood that past performance is
indicative of future performance.

Our MD&A is performed on a consolidated basis and is inclusive of the results
and operations of Sprint prospectively from the close of our Merger on April 1,
2020. The Merger enhanced our spectrum portfolio, increased our customer base,
altered our product mix by increasing the portion of customers who finance their
devices with leasing programs and created opportunity for synergies in our
operations. We anticipate an initial increase in our combined operating costs
which we expect to decrease as we realize synergies. We expect the trends and
results of operations of the combined company to be materially different than
those of the standalone entities.

Our MD&A is provided as a supplement to, and should be read together with, our
audited consolidated financial statements as of December 31, 2020 and 2019, and
for each of the three years in the period ended December 31, 2020, included in
  Part I    I    , Item     8   of this Form 10-K. Except as expressly stated,
the financial condition and results of operations discussed throughout our MD&A
are those of T-Mobile US, Inc. and its consolidated subsidiaries.

Beginning with the second quarter of 2020, we have discontinued the use of "Branded" to describe the results and metrics associated with our flagship brands including T-Mobile and Metro by T-Mobile.

Sprint Merger

Transaction Overview



On April 1, 2020, we completed our Merger with Sprint, a communications company
offering a comprehensive range of wireless and wireline communications products
and services. As a result, Sprint and its subsidiaries became wholly owned
consolidated subsidiaries of T-Mobile.

The Merger has altered the size and scope of our operations, impacting our
assets, liabilities, obligations, capital requirements and performance measures.
We expect the trends and results of operations of the combined company to be
materially different than those of the standalone entities. As a combined
company, we expect to be able to enhance the breadth and depth of our nationwide
5G network, accelerate innovation, increase competition in the U.S. wireless,
video and broadband industries and achieve significant synergies and cost
reductions by eliminating redundancies within the combined network as well as
other business processes and operations.

For more information regarding the Merger, see Note 2 - Business Combination of the Notes to the Consolidated Financial Statements.



On June 22, 2020, we entered into a Master Framework Agreement and related
transactions with SoftBank to facilitate the SoftBank Monetization as described
in   Note 14 - SoftBank Equity Transaction   of the Notes to the Consolidated
Financial Statements.

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Brand and Retail Unification

On August 2, 2020, we combined the Sprint and T-Mobile operations under the T-Mobile brand nationwide. We combined our retail operations and rebranded thousands of Sprint stores to T-Mobile stores while implementing the tools and systems across our distribution footprint to serve all customers in all stores.

Sale of Boost Mobile and Sprint Prepaid Brands



In connection with obtaining regulatory approval for the Merger, on July 1,
2020, DISH acquired the prepaid wireless business operated under the Boost
Mobile and Sprint prepaid brands (excluding the Assurance brand Lifeline
customers and the prepaid wireless customers of Shentel and Swiftel
Communications, Inc.), including customer accounts, inventory, contracts,
intellectual property and certain other specified assets (the "Prepaid
Business"), and assumed certain related liabilities (the "Prepaid Transaction").
For more information, see   Note 12 - Discontinued Operations   of the Notes to
the Consolidated Financial Statements.

Upon the closing of the Prepaid Transaction, we entered into a Master Network
Services Agreement (the "MVNO Agreement") providing for the provisioning of
network services to customers of the Prepaid Business for a period of up to
seven years following the closing of the Prepaid Transaction. The revenue
generated through this agreement is presented within Wholesale revenues in our
Consolidated Statements of Comprehensive Income following the close of the
Prepaid Transaction on July 1, 2020.

We included the pre-tax results of our discontinued operations in our
determination of Adjusted EBITDA, a Non-GAAP measure, to reflect contributions
of the Prepaid Business that was replaced by the MVNO Agreement beginning on
July 1, 2020. See "Adjusted EBITDA" in the "  Performance Measures  " section of
this MD&A.

Merger-Related Costs

Merger-related costs generally include:



•Integration costs to achieve efficiencies in network, retail, information
technology and back office operations;
•Restructuring costs, including severance, store rationalization and network
decommissioning; and
•Transaction costs, including legal and professional services related to the
completion of the Merger.

Transaction and restructuring costs are disclosed in   Note 2 - Business
Combination   and   Note 1    9     - Restructuring Costs  , respectively.
Merger-related costs have been excluded from our calculation of Adjusted EBITDA,
a non-GAAP financial measure, as we do not consider these costs to be reflective
of our ongoing operating performance. See "Adjusted EBITDA" in the
"  Performance Measures  " section of this MD&A. Cash payments for
Merger-related costs, including payments related to our restructuring plan, are
included in Net cash provided by operating activities in our Consolidated
Statements of Cash Flows.

Merger-related costs during the years ended December 31, 2020, 2019 and 2018 are
presented below:

                                             Year Ended December 31,               2020 Versus 2019                        2019 Versus 2018
(in millions)                                                2020                2019                2018           $ Change            % Change             $ Change            % Change
Merger-related costs
Cost of services, exclusive of
depreciation and amortization                             $   646          $       -               $    -          $    646                       NM       $       -                       NM
Cost of equipment sales                                         6                  -                    -                 6                       NM               -                       NM
Selling, general and
administrative                                              1,263                620                  196               643                   104  %             424                   216  %
Total Merger-related costs                                $ 1,915          $     620               $  196          $  1,295                   209  %       $     424                   216  %

Cash payments for Merger-related
costs                                                     $ 1,493          $     442               $   86          $  1,051                   238  %       $     356                   414  %


NM - Not Meaningful

Merger-related costs will be impacted by restructuring and integration
activities expected to occur over the next three years as we implement
initiatives to realize cost efficiencies from the Merger. Transaction costs,
including legal and professional service fees related to the completion of the
Merger, are expected to decrease in periods subsequent to the close of the
Merger.

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Restructuring

Upon the close of the Merger, we began implementing restructuring initiatives to
realize cost efficiencies from the Merger. The major activities associated with
the restructuring initiatives to date include:

•Contract termination costs associated with rationalization of retail stores,
distribution channels, duplicative network and backhaul services and other
agreements;
•Severance costs associated with the reduction of redundant processes and
functions; and
•The decommissioning of certain small cell sites and distributed antenna systems
to achieve synergies in network costs.

Anticipated Impacts



Our restructuring activities are expected to occur over the next three years
with substantially all costs incurred by the end of fiscal year 2023. We are
evaluating additional restructuring initiatives which are dependent on
consultations and negotiation with certain counterparties and the expected
impact on our business operations, which could affect the amount or timing of
the restructuring costs and related payments. We expect our principal sources of
funding to be sufficient to meet our liquidity requirements and anticipated
payments associated with the restructuring initiatives.

As a result of our ongoing restructuring activities, we expect to realize cost
efficiencies by eliminating redundancies within our combined network as well as
other business processes and operations. We expect these activities to result in
a reduction of expenses within Cost of services and Selling, general and
administrative in our Consolidated Statements of Comprehensive Income.

COVID-19 Pandemic



The COVID-19 pandemic has resulted in a widespread health crisis that has
adversely affected businesses, economies, and financial markets worldwide, and
has caused significant volatility in the U.S. and international debt and equity
markets. The impact of the Pandemic has been wide-ranging, including, but not
limited to, the temporary closures of many businesses and schools, "shelter in
place" orders, travel restrictions, social distancing guidelines and other
governmental, business and individual actions taken in response to the Pandemic.
These restrictions have impacted, and will continue to impact, our business,
including the demand for our products and services and the ways in which our
customers purchase and use them. In addition, the Pandemic has resulted in
economic uncertainty and a significant increase in unemployment in the United
States, which could affect our customers' purchasing decisions and ability to
make timely payments. Throughout the year, the Pandemic has peaked, subsided and
seen a resurgence, leading to phased re-openings, as well as continuing or
renewed containment measures.

As a critical communications infrastructure provider as designated by the government, our focus has been on providing crucial connectivity to our customers and impacted communities while ensuring the safety and well-being of our employees.



Our Response

We have taken a variety of steps to help mitigate the impact of the Pandemic on our customers and to protect the health and well-being of our workforce and communities:

To Protect and Support Our Employees and Communities



•Before the Merger, in mid-March, approximately 80% of T-Mobile and 70% of
Sprint company-owned store locations, as well as many third-party retailer
locations that sell our T-Mobile, Metro by T-Mobile and Sprint brands were
temporarily closed. In compliance with the regulations of various states, we
have since reopened substantially all of our previously closed stores.
•At the onset of the Pandemic, we supplemented pay for certain of our employees
and commissions for third-party dealers and provided access to incremental paid
time off for employees experiencing symptoms, taking care of children who were
home due to school closures or caring for individuals impacted by the Pandemic.
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•We implemented remote working arrangements for many employees with a
significant portion of our internal and global care employees transitioned to a
work-from-home environment. We also encouraged our corporate and administrative
employees to work remotely, if possible.
•We also continue to encourage healthy practices such as social distancing and
hand washing and have increased cleaning and sanitation in all our facilities
and stores.

To Keep Our Customers Connected



•In March, we committed to the FCC's Keep Americans Connected pledge, and at the
FCC's request, later extended our commitment to June 30, 2020. During this
period, we pledged to:
•Not terminate service to any residential or small business customers because of
their inability to pay their bills due to disruptions caused by the Pandemic;
and
•Waive any late fees that any residential or small business customers incurred
because of their economic circumstances related to the Pandemic.
•After the Pledge extension ended, we continued to work with our customers to
help them maintain service and become current on their accounts, while avoiding
financial hardship.
•We also took additional temporary steps in March to ensure that all current
T-Mobile customers with smartphone data plans were provided connectivity to
learn and work remotely through June 30, 2020, including:
•Providing unlimited high-speed smartphone data to current customers as of March
13, 2020 who had legacy plans without unlimited high-speed data (excluding
roaming);
•Giving T-Mobile postpaid and Metro by T-Mobile customers on smartphone plans
with mobile hotspot data the ability to add 10GB of Smartphone Mobile HotSpot
each month (20GB total);
•Working with our Lifeline partners to provide customers up to 5GB per month of
free data;
•Increasing the data allowance, at no extra charge, to schools and students
using our EmpowerED digital learning program to ensure each participant had
access to at least 20GB of data per month; and
•Providing free international calling to landlines (and, in many cases, mobile
numbers) to countries that were significantly impacted by the Pandemic through
May 13, 2020.
•In addition:
•We are offering our customers creative, new COVID-safe solutions such as
virtual selling and curbside pickup;
•We partnered with multiple spectrum holders and the FCC to successfully deploy
additional 600 MHz spectrum on a temporary basis (through June 30, 2020),
effectively doubling total 600 MHz LTE capacity across the nation to help ensure
customers can stay connected during this critical time; and
•We are working to keep our network fully operational as an essential service to
first responders, 911 communications and our customers and continue to expand
our 5G network, while adhering to governmental guidelines.

We continue to monitor the Pandemic and its impacts and may adjust our actions
as needed to continue to provide our products and services to our communities
and employees.

Impact on Results of Operations and Performance Measures for the Year Ended December 31, 2020



For the year ended December 31, 2020, we incurred $458 million, before taxes, in
supplemental employee payroll, third-party commissions and cleaning-related
COVID-19 costs, which are included in Selling, general and administrative
expenses in our Consolidated Statements of Comprehensive Income. These costs
have been excluded from the calculation of Adjusted EBITDA, a non-GAAP financial
measure, as they represent direct, incremental costs as a result of our response
to the Pandemic. See "Adjusted EBITDA" in the "  Performance Measures  " section
of this MD&A.

Expected Continued Impact on Results of Operations and Performance Measures



We continue to monitor developments regarding the Pandemic and evaluate the
appropriate steps needed to align with guidelines from state, local and federal
government agencies and do what is best for our employees and customers. The
extent to which the Pandemic impacts our business, operations and financial
results will depend on numerous future developments that we are not able to
predict at this time, including the duration and scope of the Pandemic, the
success of governmental, business
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and individual actions that have been and continue to be taken in response to
the Pandemic, and the impact on economic activity from the Pandemic and actions
taken in response. Such impacts may include:

•Lower net customer additions due to lower switching activity in the industry
from reduced store traffic due to temporary retail store closures and reduced
consumer spending caused by widespread unemployment and other adverse economic
effects, partially offset by lower churn;
•Lower Equipment revenues and lower Cost of equipment sales from lower device
sales due to lower switching activity in the industry from reduced store traffic
due to temporary retail store closures, which may impact our ability to sell
devices;
•Higher bad debt expense on our service and EIP receivable portfolios due to
adverse macro-economic conditions. Should these adverse conditions worsen, our
operating and financial results could be negatively impacted;
•Continued costs to protect and support our employees and customers; and
•Potential disruptions in our supply chains.

In addition, we have reevaluated, and continue to assess, our spending, including for marketing purposes like advertising, capital projects like build-out of our stores, travel, third-party services and certain operating expenses. We have taken actions to adjust our spending given the significant uncertainty around the magnitude and duration of any recessionary impacts arising from the Pandemic.

For additional risks to our business and industry, see Item 1A. Risk Factors .


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Results of Operations

Set forth below is a summary of our consolidated financial results:


                                         Year Ended December 31              2020 Versus 2019                       2019 Versus 2018
(in millions)                                           2020              2019              2018             $ Change            % Change            $ Change            % Change
Revenues

Postpaid revenues                                    $ 36,306          $ 22,673          $ 20,862          $  13,633                    60  %       $  1,811                     9  %
Prepaid revenues                                        9,421             9,543             9,598               (122)                   (1) %            (55)                   (1) %
Wholesale revenues                                      2,590             1,279             1,183              1,311                   103  %             96                     8  %
Roaming and other service
revenues                                                2,078             1,005               798              1,073                   107  %            207                    26  %

Total service revenues                                 50,395            34,500            32,441             15,895                    46  %          2,059                     6  %

Equipment revenues                                     17,312             9,840            10,009              7,472                    76  %           (169)                   (2) %
Other revenues                                            690               658               860                 32                     5  %           (202)                  (23) %

Total revenues                                         68,397            44,998            43,310             23,399                    52  %          1,688                     4  %
Operating expenses

Cost of services, exclusive
of depreciation and
amortization shown
separately below                                       11,878             6,622             6,307              5,256                    79  %            315                     5  %
Cost of equipment sales,
exclusive of depreciation
and amortization shown
separately below                                       16,388            11,899            12,047              4,489                    38  %           (148)                   (1) %
Selling, general and
administrative                                         18,926            14,139            13,161              4,787                    34  %            978                     7  %
Impairment expense                                        418                 -                 -                418                       NM              -                       NM
Depreciation and
amortization                                           14,151             6,616             6,486              7,535                   114  %            130                     2  %

Total operating expenses                               61,761            39,276            38,001             22,485                    57  %          1,275                     3  %
Operating income                                        6,636             5,722             5,309                914                    16  %            413                     8  %
Other income (expense)

Interest expense                                       (2,483)             (727)             (835)            (1,756)                  242  %            108                   (13) %
Interest expense to
affiliates                                               (247)             (408)             (522)               161                   (39) %            114                   (22) %
Interest income                                            29                24                19                  5                    21  %              5                    26  %
Other expense, net                                       (405)               (8)              (54)              (397)                4,963  %             46                   (85) %

Total other expense, net                               (3,106)           (1,119)           (1,392)            (1,987)                  178  %            273                   (20) %

Income from continuing
operations before income
taxes                                                   3,530             4,603             3,917             (1,073)                  (23) %            686                    18  %
Income tax expense                                       (786)           (1,135)           (1,029)               349                   (31) %           (106)                   10  %

Income from continuing
operations                                              2,744             3,468             2,888               (724)                  (21) %            580                    20  %
Income from discontinued
operations, net of tax                                    320                 -                 -                320                       NM              -                       NM
Net income                                           $  3,064          $  3,468          $  2,888          $    (404)                  (12) %       $    580                    20  %

Statement of Cash Flows Data
Net cash provided by
operating activities                                 $  8,640          $  6,824          $  3,899          $   1,816                    27  %       $  2,925                    75  %
Net cash used in investing
activities                                            (12,715)           (4,125)             (579)            (8,590)                  208  %         (3,546)                  612  %
Net cash provided by (used
in) financing activities                               13,010            (2,374)           (3,336)            15,384                  (648) %            962                   (29) %
Non-GAAP Financial Measures
Adjusted EBITDA                                        24,557            13,383            12,398             11,174                    83  %            985                     8  %
Free Cash Flow, excluding
gross payments for the
settlement of interest rate
swaps                                                   3,001                4,319             3,552            (1,318)                (31) %               767                 22  %


NM - Not Meaningful

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The following discussion and analysis is for the year ended December 31, 2020,
compared to the same period in 2019 unless otherwise stated. For a discussion
and analysis of the year ended December 31, 2019, compared to the same period in
2018, please refer to Management's Discussion and Analysis of Financial
Condition and Results of Operations included in Part II, Item 7 of our Annual
Report on Form 10-K for the year ended December 31, 2019, filed with the SEC on
February 6, 2020.

Total revenues increased $23.4 billion, or 52%. The components of this change are discussed below.

Postpaid revenues increased $13.6 billion, or 60%, primarily from:



•Higher average postpaid phone customers, primarily from customers acquired in
the Merger and the success of new customer segments and rate plans, as well as
continued growth in existing and new markets;
•Higher average postpaid other customers, primarily from customers acquired in
the Merger and growth in other connected devices (tablets and wearable products)
and growth in public and educational sector customers; and
•Higher postpaid phone ARPU, primarily as a result of customers acquired in the
Merger. See "Postpaid Phone ARPU" in the "  Performance Measures  " section of
this MD&A.

Prepaid revenues were essentially flat.

Wholesale revenues increased $1.3 billion, or 103%, primarily from:



•Our Master Network Service Agreement with DISH, which went into effect on July
1, 2020; and
•Customers acquired in the Merger.

Roaming and other service revenues increased $1.1 billion, or 107%, primarily from:



•Inclusion of wireline operations acquired in the Merger; and
•Higher Lifeline, advertising and affiliate revenues primarily due to operations
acquired in the Merger; partially offset by
•Lower international roaming due to the impact of the Pandemic, and lower
domestic roaming due to revenue generated from Sprint customers roaming on the
T-Mobile network in periods before the Merger.

Equipment revenues increased $7.5 billion, or 76%, primarily from:



•An increase of $3.6 billion in lease revenues due to a higher number of
customer devices under lease, primarily from leases acquired in the Merger;
•An increase of $2.5 billion in device sales revenue, excluding purchased leased
devices, primarily from:
•An increase in the number of devices sold, excluding purchased leased devices,
due to an increase in our customer base primarily due to the Merger; and
•Higher average revenue per device sold, excluding purchased leased devices, due
to an increase in the high-end device mix due to the Merger;
•An increase of $625 million in sales of leased devices, primarily due to an
increase in purchased leased devices as a result of the Merger; and
•An increase of $622 million in revenues primarily related to the liquidation of
a higher volume of returned devices primarily as a result of the Merger.

Operating expenses increased $22.5 billion, or 57%. The components of this change are discussed below.

Cost of services, exclusive of depreciation and amortization, increased $5.3 billion, or 79%, primarily from:

•An increase in expenses associated with leases, backhaul agreements and other network expenses, such as roaming,


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acquired in the Merger and the continued build-out of our nationwide 5G network;
•An increase of $646 million for the year ended December 31, 2020, in
Merger-related costs including incremental costs associated with accelerating
amortization of right-of-use assets for terminated cell sites leases and the
decommissioning of certain small cell sites and distributed antenna systems;
•Higher employee-related and benefit-related costs primarily due to increased
headcount as a result of the Merger;
•An increase in repair and maintenance costs, primarily due to the Merger; and
•An increase in regulatory and roaming costs primarily due to the Merger.

Cost of equipment sales, exclusive of depreciation and amortization, increased $4.5 billion, or 38%, primarily from:



•An increase of $2.8 billion in device cost of equipment sales, excluding
purchased leased devices, primarily from:
•An increase in the number of devices sold, excluding purchased leased devices,
due to an increase in our customer base primarily due to the Merger; and
•Higher average costs per device sold, excluding purchased leased devices, due
to an increase in the high-end device mix due to the Merger;
•An increase of $759 million in leased device cost of equipment sales, primarily
due to an increase in purchased leased devices as a result of the Merger; and
•An increase of $511 million in costs related to the liquidation of a higher
volume of returned devices primarily as a result of the Merger.

Selling, general and administrative expenses increased $4.8 billion, or 34%, primarily from:



•Higher employee-related costs due to an increase in the number of employees
primarily from the Merger;
•Higher external labor and professional services, lease and advertising expense
from the Merger;
•$1.3 billion of Merger-related costs, including transaction costs associated
with legal and professional services and restructuring costs including severance
and store rationalization, compared to $620 million of Merger-related costs in
the year ended December 31, 2019;
•Higher commission expense, primarily due to:
•Higher gross customer additions primarily due to the increased size of the
company as a result of the Merger, partially offset by lower switching activity
in the industry from reduced store traffic due to retail store closures arising
from the Pandemic; partially offset by
•Lower commissions expense due to lower prepaid gross additions and compensation
structure changes;
•Higher bad debt expense, primarily due to customers acquired as a result of the
Merger and the recording of estimated losses associated with the new credit loss
standard, including incremental bad debt for the estimated macro-economic
impacts of the Pandemic; and
•Higher legal-related expenses from recording an estimated accrual associated
with the FCC Notice of Apparent Liability and commitments associated with the
Merger.
•Selling, general and administrative expenses for the year ended December 31,
2020 included $458 million of supplemental employee payroll, third-party
commissions and cleaning-related COVID-19 costs.

Impairment expense was $418 million and consisted of the following:



•A $218 million impairment on the goodwill in the Layer3 reporting unit; and
•A $200 million impairment on the capitalized software development costs related
to our postpaid billing system.
•There was no impairment expense for the year ended December 31, 2019.

For more information regarding the impairments above, see   Note 5 - Property
and Equipmen    t   and   Note 6 - Goodwill, Spectrum License Transactions and
Oth    er Intangible Assets   of the Notes to the Consolidated Financial
Statements.
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Depreciation and amortization increased $7.5 billion, or 114%, primarily as a result of the Merger, including:



•Higher depreciation expense from assets acquired in the Merger, excluding
leased devices, and network expansion from the continued build-out of our
nationwide 5G network;
•Higher depreciation expense on leased devices resulting from a higher total
number of customer devices under lease, primarily from customers acquired in the
Merger; and
•Higher amortization from intangible assets acquired in the Merger.

Operating income, the components of which are discussed above, increased $914 million, or 16%.

Interest expense increased $1.8 billion, or 242%, primarily from:



•The assumption of debt with a fair value of $31.8 billion in connection with
the Merger;
•The issuance of an aggregate of $19.0 billion in Senior Secured Notes and the
entry into a $4.0 billion secured term loan in April 2020 in connection with the
Merger;
•Amortization of interest rate swap derivatives beginning upon settlement in
April 2020; and
•The issuance of an aggregate of $8.75 billion in Senior Secured Notes in
October 2020.

Interest expense to affiliates decreased $161 million, or 39%, primarily from
the redemption of an aggregate of $5.25 billion in Senior Notes to affiliates
and the repayment of an aggregate of $4.0 billion in Incremental term loan
facility to affiliates in 2020, partially offset by lower capitalized interest.

Other expense, net increased $397 million, primarily from losses on the extinguishment of debt.

Income from continuing operations before income taxes, the components of which are discussed above, was $3.5 billion and $4.6 billion for the years ended December 31, 2020 and 2019, respectively.

Income tax expense decreased $349 million, or 31%, primarily from:



•Lower income before income taxes; and
•A lower effective tax rate, primarily due to changes in state income taxes and
excess tax benefits, partially offset by an increase in non-deductible expenses,
including certain Merger-related costs. The effective tax rate was 22.3% and
24.7% for the years ended December 31, 2020 and 2019, respectively.

Income from continuing operations decreased $724 million, or 21%, primarily from:



•Higher Interest expense; and
•Higher Other expense, net; partially offset by
•Higher operating income; and
•Lower Income tax expense.

Income from discontinued operations, net of tax was $320 million for the year
ended December 31, 2020, and consists of the results of the Prepaid Business
that was divested on July 1, 2020. There were no discontinued operations for the
year ended December 31, 2019. For more information regarding the Prepaid
Transaction, see   Note 12 - Discontinued Operations   of the Notes to the
Consolidated Financial Statements.

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Net income, the components of which are discussed above, decreased $404 million,
or 12%, and included the following:

•Merger-related costs, net of tax, of $1.5 billion for the year ended
December 31, 2020, compared to $501 million for the year ended December 31,
2019.
•The negative impact of supplemental employee payroll, third-party commissions
and cleaning-related COVID-19 costs, net of tax, of $339 million for the year
ended December 31, 2020, compared to no impact for the year ended December 31,
2019.
•Impairment expense of $366 million, net of tax, for the year ended December 31,
2020, compared to no impairment expense for the year ended December 31, 2019.

Guarantor Financial Information



On March 2, 2020, the SEC adopted amendments to the financial disclosure
requirements for guarantors and issuers of guaranteed securities, as well for
affiliates whose securities collateralize a registrant's securities. We early
adopted the requirements of the amendments on January 1, 2020, which included
replacing guarantor condensed consolidating financial information with
summarized financial information for the consolidated obligor group (Parent,
Issuer, and Guarantor Subsidiaries) and no longer requiring guarantor cash flow
information, financial information for non-guarantor subsidiaries, or a
reconciliation to the consolidated results.

On April 1, 2020, in connection with the closing of the Merger, we assumed
certain registered debt to third parties issued by Sprint, Sprint
Communications, Inc. and Sprint Capital Corporation (collectively, the "Sprint
Issuers"). Amounts previously disclosed for the estimated values of certain
acquired assets and liabilities assumed have been adjusted based on additional
information arising subsequent to the initial valuation. These revisions to the
estimated values did not have a significant impact on our summarized financial
information for the consolidated obligor group.

Pursuant to the applicable indentures and supplemental indentures, the long-term
debt to affiliates and third parties issued by T-Mobile USA, Inc. and the Sprint
Issuers (collectively, the "Issuers") is fully and unconditionally guaranteed,
jointly and severally, on a senior unsecured basis by T-Mobile ("Parent") and
certain of Parent's 100% owned subsidiaries ("Guarantor Subsidiaries").

The guarantees of the Guarantor Subsidiaries are subject to release in limited
circumstances only upon the occurrence of certain customary conditions. The
indentures, supplemental indentures and credit agreements governing the
long-term debt contain covenants that, among other things, limit the ability of
the Issuers or borrowers and the Guarantor Subsidiaries to incur more debt, pay
dividends and make distributions, make certain investments, repurchase stock,
create liens or other encumbrances, enter into transactions with affiliates,
enter into transactions that restrict dividends or distributions from
subsidiaries, and merge, consolidate or sell, or otherwise dispose of,
substantially all of their assets. Certain provisions of each of the credit
agreements, indentures and supplemental indentures relating to the long-term
debt restrict the ability of the Issuers or borrowers to loan funds or make
payments to Parent. However, the Issuers or borrowers and Guarantor Subsidiaries
are allowed to make certain permitted payments to Parent under the terms of the
indentures, supplemental indentures and credit agreements.

In December 2019, the FASB issued ASU 2019-12, "Income Taxes (Topic 740):
Simplifying the Accounting for Income Taxes." The standard simplifies the
accounting for income taxes by removing certain exceptions to the general
principles in Topic 740. We early adopted the standard on January 1, 2020 and
have applied the standard retrospectively to all periods presented. Upon the
adoption of the standard, deferred tax assets of non-guarantor entities in
aggregate of $163 million were reclassified and netted with the deferred tax
liabilities of the guarantor obligor group of the debt issued by T-Mobile USA,
Inc. The adoption of this standard did not have a material impact on our
consolidated financial statements for the year ended December 31, 2020.

In March 2020, certain Guarantor Subsidiaries became non-Guarantor Subsidiaries.
Certain prior period amounts have been reclassified to conform to the current
period's presentation.

In connection with the preparation of our guarantor financial information for
the year ended December 31, 2020, we determined that the summarized balance
sheet information and summarized results of operations for the consolidated
obligor group of debt issued by T-Mobile USA, Inc., as presented in our
Quarterly Reports on Form 10-Q for the quarterly periods ended March 31, 2020,
June 30, 2020, and September 30, 2020, should be adjusted to exclude investments
in non-guarantor subsidiaries and the related equity method income from
non-guarantor subsidiaries as of and for the year-to-date periods ending
December 31, 2019, March 31, 2020, June 30, 2020 and September 30, 2020. We also
determined the summarized balance sheet information
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and summarized results of operations for the consolidated obligor groups of debt
issued by Sprint, Sprint Communications, Inc. and Sprint Capital Corporation, as
presented in our Quarterly Reports on Form 10-Q for the quarterly periods ended
June 30, 2020, and September 30, 2020, should be adjusted as well to exclude
investments in their respective non-guarantor subsidiaries for the year-to-date
periods ending June 30, 2020 and September 30, 2020. Therefore, we have updated
the historical summarized financial information for these periods and obligor
groups as set forth below. This adjustment does not impact the Consolidated
Financial Statements for any quarterly or annual periods and does not impact
guarantor financial information filed prior to our adoption of the new
disclosure requirements for guarantors and issuers of guaranteed securities on
January 1, 2020.

Basis of Presentation

The following tables include summarized financial information of the obligor
groups of debt issued by T-Mobile USA, Inc., Sprint, Sprint Communications,
Inc., and Sprint Capital Corporation. The summarized financial information of
each obligor group is presented on a combined basis with balances and
transactions within the obligor group eliminated. Investments in and the equity
in earnings of non-guarantor subsidiaries which would otherwise be consolidated
in accordance with U.S. GAAP are excluded from the below summarized financial
information pursuant to SEC Regulation S-X Rule 13-01.

The summarized balance sheet information for the consolidated obligor group of debt issued by T-Mobile USA, Inc. is presented in the table below:


                                                                               September 30,         December 31,          December 31,
(in millions)                  March 31, 2020           June 30, 2020              2020                  2020                  2019
Current assets                $        8,431          $       23,105          $     18,035          $     22,638          $      8,177
Noncurrent assets                     77,827                 154,164               164,220               165,294                77,684
Current liabilities                   14,125                  21,487                17,765                19,982                11,885
Noncurrent liabilities                41,330                 101,662               109,249               112,930                43,448
Due to non-guarantors                      -                   7,054                 7,183                 7,433                     -
Due from non-guarantors                  358                       -                     -                     -                   346
Due to related parties                14,215                   6,067                 4,846                 4,873                14,173
Due from related parties                  26                      24                    19                    22                    20


The summarized results of operations information for the consolidated obligor group of debt issued by T-Mobile USA, Inc. is presented in the table below:


                                                                           Nine Months
                          Three Months                                        Ended               Year Ended             Year Ended
                              Ended             Six Months Ended          September 30,          December 31,           December 31,
(in millions)            March 31, 2020           June 30, 2020               2020                   2020                   2019
Total revenues           $     10,694          $         28,071          $     47,076          $      67,112          $      43,431
Operating income                1,309                     1,525                 3,353                  4,335                  4,761
Net income                        809                       412                 1,029                  1,148                  2,860
Revenue from
non-guarantors                    259                       656                 1,088                  1,496                    974
Operating expenses to
non-guarantors                    129                       775                 1,443                  2,127                    668
Other expense to
non-guarantors                      -                       (40)                  (77)                  (114)                     -



The summarized balance sheet information for the consolidated obligor group of
debt issued by Sprint and Sprint Communications, Inc. is presented in the table
below:
(in millions)               June 30, 2020       September 30, 2020       December 31, 2020
Current assets             $        1,619      $             1,051      $            2,646
Noncurrent assets                  49,525                   25,512                  26,278
Current liabilities                 4,716                    3,317                   4,209
Noncurrent liabilities             64,845                   61,437                  65,161

Due from non-guarantors            49,254                   25,231                  25,993
Due to related parties              6,025                    4,774                   4,786
Due from related parties                -                        5                       -



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The summarized results of operations information for the consolidated obligor
group of debt issued by Sprint and Sprint Communications, Inc., since the
acquisition of Sprint on April 1, 2020, is presented in the table below:

                                                                                                            Nine Months
                                                   Three Months Ended           Six Months Ended          Ended December
(in millions)                                         June 30, 2020            September 30, 2020            31, 2020
Total revenues                                    $                2          $                4          $         10
Operating loss                                                   (15)                        (17)                  (15)
Net loss                                                        (819)                     (1,651)               (2,229)
Revenue from non-guarantors                                        2                           4                     6

Other income, net, from non-guarantors                           367                         732                 1,084



The summarized balance sheet information for the consolidated obligor group of
debt issued by Sprint Capital Corporation is presented in the table below:
(in millions)               June 30, 2020       September 30, 2020       December 31, 2020
Current assets             $        1,619      $             1,051      $            2,646
Noncurrent assets                  58,547                   34,540                  35,330
Current liabilities                 4,788                    3,388                   4,281
Noncurrent liabilities             70,070                   66,530                  70,253

Due from non-guarantors            58,276                   34,259                  35,046
Due to related parties              6,025                    4,774                   4,786
Due from related parties                -                        5                       -



The summarized results of operations information for the consolidated obligor
group of debt issued by Sprint Capital Corporation, since the acquisition of
Sprint on April 1, 2020, is presented in the table below:

                                                                                                            Nine Months
                                                   Three Months Ended           Six Months Ended          Ended December
(in millions)                                         June 30, 2020            September 30, 2020            31, 2020
Total revenues                                    $                2          $                4          $         10
Operating loss                                                   (15)                        (17)                  (15)
Net loss                                                        (804)                     (1,608)               (2,165)
Revenue from non-guarantors                                        2                           4                     6

Other income, net, from non-guarantors                           366                         732                 1,085



Performance Measures

In managing our business and assessing financial performance, we supplement the
information provided by our financial statements with other operating or
statistical data and non-GAAP financial measures. These operating and financial
measures are utilized by our management to evaluate our operating performance
and, in certain cases, our ability to meet liquidity requirements. Although
companies in the wireless industry may not define each of these measures in
precisely the same way, we believe that these measures facilitate comparisons
with other companies in the wireless industry on key operating and financial
measures.

The performance measures presented below include the impact of the Merger on a
prospective basis from the close date of April 1, 2020. Historical results were
not restated.

Customers

A customer is generally defined as a SIM number with a unique T-Mobile
identifier which is associated with an account that generates revenue. Customers
are qualified either for postpaid service utilizing phones, wearables, DIGITS or
other connected devices, which include tablets and SyncUp products, where they
generally pay after receiving service, or prepaid service, where they generally
pay in advance of receiving service. Our postpaid customers include customers of
T-Mobile. Our prepaid customers include customers of T-Mobile and Metro by
T-Mobile.

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The following table sets forth the number of ending customers:
                                                As of December 31,                                    2020 Versus 2019                       2019 Versus 2018
(in thousands)                   2020                     2019                2018                   #                   %                  #                  %
Customers, end of period

Postpaid phone customers
(1)                              66,618                  40,345               37,224                26,273                65  %             3,121                8  %
Postpaid other customers
(1)                              14,732                   6,689                5,295                 8,043               120  %             1,394       

26 %



Total postpaid customers         81,350                  47,034               42,519                34,316                73  %             4,515               11  %
Prepaid customers (1),(2)        20,714                  20,860               21,137                  (146)               (1) %              (277)              (1) %

Total customers                 102,064                  67,894               63,656                34,170                50  %             4,238                7  %

Adjustment to prepaid
customers (2)                         -                    (616)                   -                   616              (100) %              (616)                 NM


NM - Not Meaningful
(1) Includes customers acquired in connection with the Merger and certain
customer base adjustments. See Customer Base Adjustments and Net Customer
Additions tables below.
(2) On July 18, 2019, we entered into an agreement whereby certain T-Mobile
prepaid products will now be offered and distributed by a current MVNO partner.
As a result, we included a base adjustment in the third quarter of 2019 to
reduce prepaid customers by 616,000.

Total customers increased 34,170,000, or 50%, primarily from:



•Higher postpaid phone customers, primarily due to customers acquired in the
Merger and the success of new customer segments and rate plans and continued
growth in existing and new markets, along with promotional activities; and
•Higher postpaid other customers, primarily due to customers acquired in the
Merger and growth in other connected devices primarily related to public and
educational sector customers and wearable products; partially offset by
•Lower prepaid customers, primarily due to the customer base adjustments made to
align the customer reporting policies of T-Mobile and Sprint, partially offset
by the continued success of our prepaid business due to promotional activities
and rate plan offers.

Customer Base Adjustments

Certain adjustments were made to align the customer reporting policies of T-Mobile and Sprint.



The adjustments made to the reported T-Mobile and Sprint ending customer base as
of March 31, 2020, are presented below:
(in thousands)                             Postpaid phone customers         Postpaid other customers         Total postpaid customers         Prepaid customers          Total customers
Reconciliation to beginning customers
T-Mobile customers as reported, end of
period March 31, 2020                               40,797                            7,014                           47,811                       20,732                    68,543
Sprint customers as reported, end of
period March 31, 2020                               25,916                            8,428                           34,344                        8,256                    42,600
Total combined customers, end of period
March 31, 2020                                      66,713                           15,442                           82,155                       28,988                   111,143

Adjustments


Reseller reclassification to wholesale
customers (1)                                         (199)                          (2,872)                          (3,071)                           -                    (3,071)
EIP reclassification from postpaid to
prepaid (2)                                           (963)                               -                             (963)                         963                         -
Divested prepaid customers (3)                           -                                -                                -                       (9,207)                   (9,207)
Rate plan threshold (4)                               (182)                            (918)                          (1,100)                           -                    (1,100)
Customers with non-phone devices (5)                  (226)                             226                                -                            -                         -
Collection policy alignment (6)                       (150)                             (46)                            (196)                           -                      (196)
Miscellaneous adjustments (7)                         (141)                             (43)                            (184)                        (302)                     (486)
Total Adjustments                                   (1,861)                          (3,653)                          (5,514)                      (8,546)                  (14,060)
Adjusted beginning customers as of April
1, 2020                                             64,852                           11,789                           76,641                       20,442                    97,083


(1) In connection with the closing of the Merger, we refined our definition of
wholesale customers resulting in the reclassification of certain postpaid and
prepaid reseller customers to wholesale customers. Starting with the three
months ended March 31, 2020, we discontinued reporting wholesale customers to
focus on postpaid and prepaid customers and wholesale revenues, which we
consider more relevant than the number of wholesale customers given the
expansion of M2M and IoT products.
(2) Prepaid customers with a device installment billing plan historically
included as Sprint postpaid customers have been reclassified to prepaid
customers to align with T-Mobile policy.
(3) Customers associated with the Sprint wireless prepaid and Boost Mobile
brands that were divested on July 1, 2020, have been excluded from our reported
customers.
(4) Customers who have rate plans with monthly recurring charges which are
considered insignificant have been excluded from our reported customers.
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(5) Customers with postpaid phone rate plans without a phone (e.g., non-phone
devices) have been reclassified from postpaid phone to postpaid other customers
to align with T-Mobile policy.
(6) Certain Sprint customers subject to collection activity for an extended
period of time have been excluded from our reported customers to align with
T-Mobile policy.
(7) Miscellaneous insignificant adjustments to align with T-Mobile policy.

Net Customer Additions

The following table sets forth the number of net customer additions:


                                                  Year Ended December 31,                              2020 Versus 2019                         2019 Versus 2018
(in thousands)                                            2020                2019               2018                     #                    %                  #                %
Net customer additions

Postpaid phone customers                                                      2,218              3,121                    3,097                 (903)            (29) %              24               1  %
Postpaid other customers                                                      3,268              1,394                    1,362                1,874             134  %              32               2  %

Total postpaid customers                                                      5,486              4,515                    4,459                  971              22  %              56               1  %
Prepaid customers (1)                                                           145                339                      460                 (194)            (57) %            (121)            (26) %

Total customers                                                               5,631              4,854                    4,919                  777              16  %             (65)             (1) %

Acquired customers, net
of base adjustments                                                          29,228                  -                        -               29,228                 NM               -                 NM


NM - Not Meaningful
(1) On July 18, 2019, we entered into an agreement whereby certain T-Mobile
prepaid products will now be offered and distributed by a current MVNO partner.
As a result, we included a base adjustment in the third quarter of 2019 to
reduce prepaid customers by 616,000.

Total net customer additions increased 777,000, or 16%, primarily from:



•Higher postpaid other net customer additions, primarily due to higher gross
additions from connected devices, primarily due to public and educational sector
additions and lower churn, partially offset by lower switching activity in the
industry from reduced store traffic due to retail store closures arising from
the Pandemic; partially offset by
•Lower postpaid phone net customer additions, primarily due to higher churn from
customers acquired in the Merger and lower switching activity in the industry
from reduced store traffic due to retail store closures arising from the
Pandemic; and
•Lower prepaid gross customer additions, partially offset by lower churn, both
primarily due to lower switching activity in the industry from reduced store
traffic due to retail store closures arising from the Pandemic.

Churn



Churn represents the number of customers whose service was disconnected as a
percentage of the average number of customers during the specified period. The
number of customers whose service was disconnected is presented net of customers
that subsequently have their service restored within a certain period of time.
We believe that churn provides management, investors and analysts with useful
information to evaluate customer retention and loyalty.

The following table sets forth the churn:


                                                                                                                   Bps Change
                                                                        Year Ended December 31,                    2020 Versus        Bps Change 2019
                                                                                                                      2019        Versus 2018
                                                      2020            2019               2018
Postpaid phone churn                                                            0.90  %             0.89  %             1.01  %                 1 bps            -12 bps
Prepaid churn                                                                   3.03  %             3.82  %             3.96  %               -79 bps            -14 bps



Postpaid phone churn was essentially flat, primarily due to the inclusion of the
customer base acquired in the Merger with higher churn, offset by lower
switching activity in the industry due to reduced store traffic due to temporary
retail store closures arising from the Pandemic.

Prepaid churn decreased 79 basis points, primarily due to lower switching activity in the industry due to reduced store traffic due to temporary retail store closures arising from the Pandemic and the continued success of our prepaid products due to promotional activities and rate plan offers.


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Total Postpaid Accounts



A postpaid account is generally defined as a billing account number that
generates revenue. Postpaid accounts are generally comprised of customers that
are qualified for postpaid service utilizing phones, wearables, DIGITS or other
connected devices which include tablets and SyncUp products, where they
generally pay after receiving service.

                                                As of December 31,                                      2020 Versus 2019                            2019 Versus 2018
(in thousands)                   2020                     2019                2018               # Change              % Change              # Change             % Change
Accounts, end of period
Total postpaid customer
accounts(1)                      25,754                  15,047               14,015                10,707                    71  %             1,032                     7  %

(1) Includes accounts acquired in connection with the Merger and certain account base adjustments. See Account Base Adjustments table below.



Total postpaid customer accounts increased 10,707,000, or 71%, primarily due to
10,150,000 accounts acquired in the Merger, the success of new customer segments
and rate plans, continued growth in existing and new markets, along with
promotional activities, improvements in network quality and industry-leading
customer service, partially offset by lower switching activity in the industry
from reduced store traffic due to retail store closures resulting from the
Pandemic.

Account Base Adjustments

Certain adjustments were made to align the account reporting policies of T-Mobile and Sprint.



The adjustments made to the reported T-Mobile and Sprint ending account base as
of March 31, 2020 are presented below:
(in thousands)                                                     Postpaid 

Accounts


Reconciliation to beginning accounts
T-Mobile accounts as reported, end of period March 31, 2020

15,244


Sprint accounts, end of period March 31, 2020

11,246


Total combined accounts, end of period March 31, 2020

26,490

Adjustments


Reseller reclassification to wholesale accounts (1)                         

(1)


EIP reclassification from postpaid to prepaid (2)                         

(963)


Rate plan threshold (3)                                                    

(18)


Collection policy alignment (4)                                            

(76)


Miscellaneous adjustments (5)                                              

(47)


Total Adjustments                                                       

(1,105)


Adjusted beginning accounts as of April 1, 2020

25,385




(1) In connection with the closing of the Merger, we refined our definition of
wholesale accounts resulting in the reclassification of certain postpaid and
prepaid reseller accounts to wholesale accounts.
(2) Prepaid accounts with a customer with a device installment billing plan
historically included as Sprint postpaid accounts have been reclassified to
prepaid accounts to align with T-Mobile policy.
(3) Accounts with customers who have rate plans with monthly recurring charges
which are considered insignificant have been excluded from our reported
accounts.
(4) Certain Sprint accounts subject to collection activity for an extended
period of time have been excluded from our reported accounts to align with
T-Mobile policy.
(5) Miscellaneous insignificant adjustments to align with T-Mobile policy.

Average Revenue Per User



ARPU represents the average monthly service revenue earned from customers. We
believe ARPU provides management, investors and analysts with useful information
to assess and evaluate our service revenue per customer and assist in
forecasting our future service revenues generated from our customer base.
Postpaid phone ARPU excludes postpaid other customers and related revenues,
which include wearables, DIGITS and other connected devices such as tablets and
SyncUp products.
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The following table illustrates the calculation of our operating measure ARPU and reconciles this measure to the related service revenues:



(in millions, except                   Year Ended December 31,              2020 Versus 2019                        2019 Versus 2018
average number of
customers and ARPU)                                   2020                        2019                         2018      $ Change               % Change    $ Change            % Change
Calculation of Postpaid
Phone ARPU

Postpaid service revenues                          $ 36,306          $ 22,673            $ 20,862          $  13,633                     60  %             $  1,811                     9  %
Less: Postpaid other
revenues                                             (2,367)           (1,344)             (1,117)            (1,023)                    76  %                 (227)                   20  %

Postpaid phone service
revenues                                             33,939            21,329              19,745             12,610                     59  %                1,584                     8  %
Divided by: Average number
of postpaid phone
customers (in thousands)
and number of months in
period                                               59,249            38,602              35,458             20,647                     53  %                3,144                     9  %
Postpaid phone ARPU                                $  47.74          $  46.04            $  46.40          $    1.70                      4  %             $  (0.36)                   (1) %

Calculation of Prepaid
ARPU
Prepaid service revenues                           $  9,421          $  9,543            $  9,598          $    (122)                    (1) %             $    (55)                   (1) %
Divided by: Average number
of prepaid customers (in
thousands) and number of
months in period                                     20,594            20,955              20,761               (361)                    (2) %                  194                     1  %
Prepaid ARPU                                       $  38.12          $  37.95            $  38.53          $    0.17                      -  %             $  (0.58)                   (2) %



Postpaid Phone ARPU

Postpaid phone ARPU increased $1.70, or 4%, primarily due to:



•The net impact of customers acquired in the Merger, which have higher ARPU (net
of changes arising from the reduction in base due to policy adjustments and
reclassification of certain ARPU components from the acquired customers being
moved to other revenue lines); and
•Higher premium service revenues; partially offset by
•An increase in our promotional activities.

Prepaid ARPU

Prepaid ARPU was essentially flat and was primarily impacted by:



•The impacts of certain adjustments to our customer base, including the removal
of certain prepaid customers associated with products now offered and
distributed by a current MVNO partner as those customers had lower ARPU; offset
by
•Dilution from promotional rate plans; and
•A reduction in certain non-recurring charges.

Average Revenue Per Account



Average Revenue per Account ("ARPA") represents the average monthly postpaid
service revenue earned per account. We believe postpaid ARPA provides
management, investors and analysts with useful information to assess and
evaluate our postpaid service revenue realization and assist in forecasting our
future postpaid service revenues on a per account basis. We consider postpaid
ARPA to be indicative of our revenue growth potential given the increase in the
average number of postpaid phone customers per account and increases in postpaid
other customers, including wearables, DIGITS or other connected devices, which
include tablets and SyncUp products.

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The following table illustrates the calculation of our operating measure ARPA
and reconciles this measure to the related service revenues:
(in millions, except average             Year Ended December 31,              2020 Versus 2019                        2019 Versus 2018
number of accounts, ARPA)                               2020                        2019                         2018      $ Change               % Change    $ Change            % Change
Calculation of Postpaid ARPA
Postpaid service revenues                            $ 36,306          $ 22,673            $ 20,862          $  13,633                     60  %             $  1,811                     9  %
Divided by: Average number
of postpaid accounts (in
thousands) and number of
months in period                                       22,959            14,486              13,492              8,473                     58  %                  994                     7  %
Postpaid ARPA                                        $ 131.78          $ 130.43            $ 128.86          $    1.35                      1  %             $   1.57                     1  %



Postpaid ARPA

Postpaid ARPA increased $1.35, or 1%, primarily due to:



•An increase in customers per account, including further penetration in
connected devices, and the success of new customer segments and rate plans;
•Higher premium service revenues; and
•The net impact of customers acquired in the Merger; partially offset by
•An increase in our promotional activities; and
•A reduction in certain non-recurring charges, including from the impact of the
Pandemic.

Adjusted EBITDA

Adjusted EBITDA represents earnings before Interest expense, net of Interest
income, Income tax expense, Depreciation and amortization, non-cash Stock-based
compensation and certain income and expenses not reflective of our ongoing
operating performance. Net income margin represents Net income divided by
Service revenues. Adjusted EBITDA margin represents Adjusted EBITDA divided by
Service revenues.

Adjusted EBITDA is a non-GAAP financial measure utilized by our management to
monitor the financial performance of our operations. We use Adjusted EBITDA
internally as a measure to evaluate and compensate our personnel and management
for their performance, and as a benchmark to evaluate our operating performance
in comparison to our competitors. Management believes analysts and investors use
Adjusted EBITDA as a supplemental measure to evaluate overall operating
performance and facilitate comparisons with other wireless communications
services companies because it is indicative of our ongoing operating performance
and trends by excluding the impact of interest expense from financing, non-cash
depreciation and amortization from capital investments, non-cash stock-based
compensation, Merger-related costs including network decommissioning costs,
incremental costs directly attributable to COVID-19 and impairment expense, as
they are not indicative of our ongoing operating performance, as well as certain
other nonrecurring income and expenses. Adjusted EBITDA has limitations as an
analytical tool and should not be considered in isolation or as a substitute for
income from operations, net income or any other measure of financial performance
reported in accordance with U.S. Generally Accepted Accounting Principles
("GAAP").

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Table of Contents The following table illustrates the calculation of Adjusted EBITDA and reconciles Adjusted EBITDA to Net income, which we consider to be the most directly comparable GAAP financial measure:


                                                 Year Ended December 31,                2020 Versus 2019                       2019 Versus 2018

(in millions)                                            2020                        2019              2018             $ Change             % Change      $ Change              % Change

Net income                                                      $  3,064          $  3,468          $  2,888          $    (404)                   (12) %             $  580                      20  %
Adjustments:
Income from discontinued
operations, net of tax                                              (320)                -                 -               (320)                       NM                  -                         NM
Income from continuing operations                                  2,744             3,468             2,888               (724)                   (21) %                580                      20  %
Interest expense                                                   2,483               727               835              1,756                    242  %               (108)                    (13) %
Interest expense to affiliates                                       247               408               522               (161)                   (39) %               (114)                    (22) %
Interest income                                                      (29)              (24)              (19)                (5)                    21  %                 (5)                     26  %
Other expense, net                                                   405                 8                54                397                  4,963  %                (46)                    (85) %
Income tax expense                                                   786             1,135             1,029               (349)                   (31) %                106                      10  %

Operating income                                                   6,636             5,722             5,309                914                     16  %                413                       8  %
Depreciation and amortization                                     14,151             6,616             6,486              7,535                    114  %                130                       2  %

Operating income from discontinued
operations (1)                                                       432                 -                 -                432                        NM                  -                         NM
Stock-based compensation (2)                                         516               423               389                 93                     22  %                 34                       9  %
Merger-related costs                                               1,915               620               196              1,295                    209  %                424                     216  %
COVID-19-related costs                                               458                 -                 -                458                        NM                  -                         NM
Impairment expense                                                   418                 -                 -                418                        NM                  -                         NM
Other, net (3)                                                        31                 2                18                 29                  1,450  %                (16)                    (89) %

Adjusted EBITDA                                                 $ 24,557          $ 13,383          $ 12,398          $  11,174                     83  %             $  985                       8  %
Net income margin (Net income
divided by Service revenues)                                           6  %             10  %              9  %                                  -400 bps                                       100 bps
Adjusted EBITDA margin (Adjusted
EBITDA divided by Service
revenues)                                                             49  %             39  %             38  %                                 1,000 bps                                       100 bps


NM - Not Meaningful
(1)Following the Prepaid Transaction, starting on July 1, 2020, we provide MVNO
services to DISH. We have included the operating income from discontinued
operations from April 1, 2020 through June 30, 2020, in our determination of
Adjusted EBITDA to reflect contributions of the Prepaid Business that were
replaced by the MVNO Agreement beginning on July 1, 2020 in order to enable
management, analysts and investors to better assess ongoing operating
performance and trends.
(2)Stock-based compensation includes payroll tax impacts and may not agree to
stock-based compensation expense in the consolidated financial statements.
Additionally, certain stock-based compensation expenses associated with the
Transactions have been included in Merger-related costs.
(3)Other, net may not agree to the Consolidated Statements of Comprehensive
Income primarily due to certain non-routine operating activities, such as other
special items that would not be expected to reoccur or are not reflective of
T-Mobile's ongoing operating performance, and are therefore excluded in Adjusted
EBITDA.

Adjusted EBITDA increased $11.2 billion, or 83%. The components comprising Adjusted EBITDA are discussed further above. The increase was primarily due to:



•Higher Total service revenues; and
•Higher Equipment revenues; partially offset by
•Higher Cost of services expenses, excluding Merger-related costs;
•Higher Cost of equipment sales; and
•Higher Selling, general and administrative expenses, excluding Merger-related
costs and supplemental employee payroll, third-party commissions and
cleaning-related COVID-19 costs.

Liquidity and Capital Resources



Our principal sources of liquidity are our cash and cash equivalents and cash
generated from operations, proceeds from issuance of long-term debt and common
stock, financing leases, the sale of certain receivables, financing arrangements
of vendor payables which effectively extend payment terms and the New Revolving
Credit Facility (as defined below). In connection with the closing of the Merger
on April 1, 2020, we incurred a substantial amount of additional third-party
indebtedness which increased our future financial commitments, including
aggregate interest payments. Further, the incurrence of additional indebtedness
may inhibit our ability to incur new debt under the terms governing our existing
and future indebtedness, which
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may make it more difficult for us to incur new debt in the future to finance our
business strategy. See "Risk Factors - Risks Related to Our Indebtedness."

Cash Flows

The following is a condensed schedule of our cash flows for the years ended December 31, 2020, 2019 and 2018:


                                       Year Ended December 31,              2020 Versus 2019                    2019 Versus 2018
(in millions)                                          2020               2019              2018               $                 %                $                %
Net cash provided by
operating activities                                $  8,640          $   6,824          $ 3,899          $  1,816                27  %       $ 2,925               75  %
Net cash used in investing
activities                                           (12,715)            (4,125)            (579)           (8,590)              208  %        (3,546)             612  %
Net cash provided by (used
in) financing activities                              13,010             (2,374)          (3,336)           15,384              (648) %           962              (29) %



Operating Activities

Net cash provided by operating activities increased $1.8 billion, or 27%, primarily from:



•Higher Net income, excluding non-cash income and expenses; partially offset by
•A $6.3 billion increase in net cash outflows from changes in working capital,
primarily due to the one-time impact of $2.3 billion in gross payments for the
settlement of interest rate swaps related to Merger financing for the year ended
December 31, 2020, included in the use of cash from Other current and long-term
liabilities, as well as higher use of cash from Accounts payable and accrued
liabilities and Inventories.
•Net cash provided by operating activities includes $1.5 billion and $442
million in payments for Merger-related costs for the years ended December 31,
2020 and 2019, respectively.
•Net cash provided by operating activities includes $458 million in payments for
supplemental employee payroll, third-party commissions and cleaning-related
COVID-19 costs for the year ended December 31, 2020.

Investing Activities

Net cash used in investing activities increased $8.6 billion, or 208%. The use of cash was primarily from:



•$11.0 billion in Purchases of property and equipment, including capitalized
interest, from network integration related to the Merger and the continued
build-out of our nationwide 5G network;
•$5.0 billion in cash paid for the acquisition of Sprint, net of cash and
restricted cash acquired; and
•$1.3 billion in Purchases of spectrum licenses and other intangible assets,
including deposits; partially offset by
•$3.1 billion in Proceeds related to beneficial interests in securitization
transactions;
•$1.2 billion in Proceeds from the divestiture of prepaid business; and
•$632 million related to derivative contracts under collateral exchange
arrangements, for more information regarding these contracts, see   Note 7 -
Fair Value Measurements   of the Notes to the Consolidated Financial Statements.

Financing Activities

Net cash provided by (used in) financing activities increased $15.4 billion. The source of cash was primarily from:



•$35.3 billion in Proceeds from the issuance of long-term debt, net of discounts
and issuance costs, driven primarily by the issuance of $31.8 billion in Senior
Secured Notes and a draw of $4.0 billion on the New Secured Term Loan Facility;
•$18.7 billion in Proceeds from the issuance of short-term debt, net of
discounts and issuance costs, driven by a $19.0 billion draw on the New Secured
Bridge Loan Facility in connection with the closing of the Merger; and
•$304 million in net proceeds from the SoftBank Equity transaction, see   Note
14 - SoftBank Equity Transaction   of the Notes to the Consolidated Financial
Statements; partially offset by
•$20.4 billion in Repayments of long-term debt driven by the repayment of $5.3
billion aggregate principal amount of Senior Notes held by DT, our $4.0 billion
Incremental Term Loan Facility with DT, our $4.0 billion New Secured Term Loan
Facility, $2.3 billion of outstanding principal for the termination of the
accounts receivable facility assumed in the Merger, $4.2 billion aggregate
principal amount of Senior Notes held by third parties and $656 million
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aggregate principal amount of our 3.360% Senior Secured Series 2016-1 A-1 Notes
due 2021;
•$18.9 billion in Repayments of short-term debt, net of refunds for issuance
costs, for the repayment of the $19.0 billion draw on the New Secured Bridge
Loan Facility; and
•$1.0 billion in Repayments of financing lease obligations.

Cash and Cash Equivalents

As of December 31, 2020, our Cash and cash equivalents were $10.4 billion compared to $1.5 billion at December 31, 2019.

Free Cash Flow



Free Cash Flow represents Net cash provided by operating activities less cash
payments for Purchases of property and equipment, including Proceeds from sales
of tower sites and Proceeds related to beneficial interests in securitization
transactions, less Cash payments for debt prepayment or debt extinguishment.
Free Cash Flow and Free Cash Flow, excluding gross payments for the settlement
of interest rate swaps, are non-GAAP financial measures utilized by our
management, investors and analysts of our financial information to evaluate cash
available to pay debt and provide further investment in the business.

The table below provides reconciliations of Free Cash Flow and Free Cash Flow,
excluding gross payments for the settlement of interest rate swaps to Net cash
provided by operating activities, which we consider to be the most directly
comparable GAAP financial measure.
                                         Year Ended December 31,                2020 Versus 2019                       2019 Versus 2018
(in millions)                                  2020        2019               2018               $                           %      $ Change            % Change

Net cash provided by
operating activities                                    $  8,640          $   6,824          $ 3,899          $   1,816                    27  %       $  2,925               75  %
Cash purchases of property
and equipment                                            (11,034)            (6,391)          (5,541)            (4,643)                   73  %           (850)              15  %
Proceeds from sales of
tower sites                                                    -                 38                -                (38)                 (100) %             38                  NM
Proceeds related to
beneficial interests in
securitization
transactions                                               3,134              3,876            5,406               (742)                  (19) %         (1,530)             (28) %
Cash payments for debt
prepayment or debt
extinguishment costs                                         (82)               (28)            (212)               (54)                  193  %            184              (87) %
Free Cash Flow                                               658              4,319            3,552             (3,661)                  (85) %            767               22  %
Gross cash paid for the
settlement of interest
rate swaps                                                 2,343                  -                -              2,343                       NM              -                  NM

Free Cash Flow, excluding
gross payments for the
settlement of interest
rate swaps                                              $  3,001          $   4,319          $ 3,552          $  (1,318)                  (31) %       $    767               22  %


NM - Not Meaningful

Free Cash Flow, excluding gross payments for the settlement of interest rate
swaps related to Merger financing, decreased $1.3 billion, or 31%. The decrease
was primarily impacted by the following:

•Higher Cash purchases of property and equipment, including capitalized interest
of $440 million and $473 million for the years ended December 31, 2020 and 2019,
respectively, from network integration related to the Merger and the continued
build-out of our nationwide 5G network; and
•Lower Proceeds related to our deferred purchase price from securitization
transactions; partially offset by
•Higher Net cash provided by operating activities, as described above. Net cash
provided by operating activities was impacted by the following:
•$1.5 billion and $442 million in payments for Merger-related costs for the
years ended December 31, 2020 and 2019, respectively.
•$458 million in payments for supplemental employee payroll, third-party
commissions and cleaning-related COVID-19 costs for the year ended December 31,
2020.
•The calculation of Free Cash Flow, excluding gross payments for the settlement
of interest rate swaps, excludes the one-time impact of gross payments for the
settlement of interest rate swaps related to Merger financing of $2.3 billion.
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Borrowing Capacity



We maintain a financing arrangement with Deutsche Bank AG, which allows for up
to $108 million in borrowings. Under the financing arrangement, we can
effectively extend payment terms for invoices payable to certain vendors. As of
December 31, 2020, there were no outstanding balances under such financing
arrangement.

We also maintain vendor financing arrangements primarily with our main network
equipment suppliers. Under the respective agreements, we can obtain extended
financing terms. Additionally, we assumed financial liabilities with certain
vendors in connection with the closing of the Merger and incurred additional
financial liabilities with DISH at the closing of the Prepaid Transaction.
During the year ended December 31, 2020, we repaid $481 million associated with
the vendor financing arrangements and other financial liabilities, of which $342
million was associated with financial liabilities assumed in connection with the
closing of the Merger. These payments are included in Repayments of short-term
debt for purchases of inventory, property and equipment and other financial
liabilities, in our Consolidated Statements of Cash Flows. As of December 31,
2020 and 2019, the outstanding balance under the vendor financing arrangements
and other financial liabilities was $240 million and $25 million, respectively.

On April 1, 2020, in connection with the closing of the Merger, T-Mobile USA and
certain of its affiliates, as guarantors, entered into a Credit Agreement with
certain financial institutions named therein, providing for a $4.0 billion
secured term loan facility (the "New Secured Term Loan Facility") and a $4.0
billion revolving credit facility (the "New Revolving Credit Facility"). On
September 16, 2020, we increased the aggregate commitment under the New
Revolving Credit Facility to $5.5 billion through an amendment to the Credit
Agreement. On October 9, 2020, we repaid at par all of the outstanding amounts
under, and terminated, our New Secured Term Loan Facility. As of December 31,
2020, there was no outstanding balance under the New Revolving Credit Facility.

On October 30, 2020, we entered into a $5.0 billion senior secured term loan
commitment with certain financial institutions. Subsequent to December 31, 2020,
on January 14, 2021, we issued an aggregate of $3.0 billion in Senior Notes. The
senior secured term loan commitment was reduced by an amount equal to the
aggregate gross proceeds of the Senior Notes, which reduced the commitment to
$2.0 billion. Up to $2.0 billion of loans under the commitment may be drawn at
any time (subject to customary conditions precedent) through June 30, 2021. If
drawn, the facility matures in 364 days with one six-month extension exercisable
at our discretion. Proceeds may be used for general corporate purposes and will
accrue interest at a rate of LIBOR plus a margin of 1.25% per annum.

Debt Financing

As of December 31, 2020, our total debt and financing lease liabilities were $73.6 billion, excluding our tower obligations, of which $66.5 billion was classified as long-term debt and $1.4 billion was classified as long-term financing lease liabilities.



During the year ended December 31, 2020, we issued short- and long-term debt for
net proceeds of $54.2 billion and redeemed and repaid short- and long-term debt
with an aggregate principal amount of $39.9 billion. Additionally, in connection
with the closing of the Merger, we assumed certain indebtedness of Sprint
totaling $31.8 billion.

On October 6, 2020, T-Mobile USA and certain of its affiliates, as guarantors,
issued an aggregate of $4.0 billion in Senior Secured Notes bearing interest
rates ranging from 2.050% to 3.300% and maturing in 2028 through 2051. On
October 9, 2020, we used the net proceeds of $4.0 billion to repay at par all of
the outstanding amounts under, and terminate, our New Secured Term Loan
Facility.

On October 28, 2020, T-Mobile USA and certain of its affiliates, as guarantors,
issued an aggregate of $4.75 billion in Senior Secured Notes bearing interest
rates ranging from 2.250% to 3.600% and maturing in 2031 through 2060. We intend
to use the net proceeds of $4.6 billion for general corporate purposes, which
may include among other things, acquisitions of additional spectrum and
refinancing existing indebtedness on an ongoing basis.

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On October 30, 2020, we entered into a $5.0 billion senior secured term loan
commitment with certain financial institutions. Subsequent to December 31, 2020,
on January 14, 2021, T-Mobile USA issued $1.0 billion of 2.250% Senior Notes due
2026, $1.0 billion of 2.625% Senior Notes due 2029, and $1.0 billion of 2.875%
Senior Notes due 2031. We intend to use the net proceeds of $3.0 billion for
general corporate purposes, which may include among other things, financing
acquisitions of additional spectrum and refinancing existing indebtedness on an
ongoing basis. A portion of the senior secured term loan commitments were
reduced by an amount equal to the aggregate gross proceeds of the Senior Notes,
which reduced the commitment to $2.0 billion. Up to $2.0 billion of loans under
the commitment may be drawn at any time (subject to customary conditions
precedent) through June 30, 2021. If drawn, the facility matures in 364 days
with one six-month extension exercisable at our discretion. Proceeds may be used
for general corporate purposes and will accrue interest at a rate of LIBOR plus
a margin of 1.25% per annum.

For more information regarding our debt financing transactions, see Note 8 - Debt of the Notes to the Consolidated Financial Statements.

Spectrum Auction



In March 2020, the FCC announced that we were the winning bidder of 2,384
licenses in Auction 103 (37/39 GHz and 47 GHz spectrum bands) for an aggregate
price of $873 million, net of an incentive payment of $59 million. At the
inception of Auction 103 in October 2019, we deposited $82 million with the FCC.
Upon conclusion of Auction 103 in March 2020, we made a down payment of $93
million for the purchase price of the licenses won in the auction. On April 8,
2020, we paid the FCC the remaining $698 million of the purchase price for the
licenses won in the auction. Prior to the Merger, the FCC announced that Sprint
was the winning bidder of 127 licenses in Auction 103 (37/39 GHz and 47 GHz
spectrum bands). All payments related to the licenses won were made by Sprint
prior the Merger.

For more information regarding our spectrum licenses, see   Note 6 - Goodwill,
Spectrum License Transactions and Other Intangible Assets   of the Notes to the
Consolidated Financial Statements.

Interest Rate Lock Derivatives



In April 2020, in connection with the issuance of an aggregate of $19.0 billion
in Senior Secured Notes, we terminated our interest rate lock derivative. At the
time of termination, the interest rate lock derivatives were a liability of $2.3
billion, of which $1.2 billion was cash collateralized. Consequently, the net
cash required to settle the interest rate lock derivatives was an additional
$1.1 billion and was paid at termination.

For more information regarding the termination of our interest rate lock derivative, see Note 7 - Fair Value Measurements of the Notes to the Consolidated Financial Statements.

Future Sources and Uses of Liquidity



We may seek additional sources of liquidity, including through the issuance of
additional long-term debt in 2021, to continue to opportunistically acquire
spectrum licenses or other assets in private party transactions or for the
refinancing of existing long-term debt on an opportunistic basis. Excluding
liquidity that could be needed for spectrum acquisitions, or for other assets,
we expect our principal sources of funding to be sufficient to meet our
anticipated liquidity needs for business operations for the next 12 months as
well as our longer-term liquidity needs. Our intended use of any such funds is
for general corporate purposes, including for capital expenditures, spectrum
purchases, opportunistic investments and acquisitions, redemption of high yield
callable debt and the execution of our integration plan.

We determine future liquidity requirements, for both operations and capital
expenditures, based in large part upon projected financial and operating
performance, and opportunities to acquire additional spectrum. We regularly
review and update these projections for changes in current and projected
financial and operating results, general economic conditions, the competitive
landscape and other factors. We have incurred, and will incur, substantial
expenses as a result of completing the Transactions, the Divestiture Transaction
and compliance with the Government Commitments, and we are also expected to
incur substantial restructuring expenses in connection with integrating and
coordinating T-Mobile's and Sprint's businesses, operations, policies and
procedures. While we have assumed that a certain level of Merger-related
expenses will be incurred, factors beyond our control, including required
consultation and negotiation with certain counterparties, could affect the total
amount or the timing of these expenses. These expenses could exceed the costs
historically borne by us and adversely affect our financial condition and
results of operations. There are a number of additional risks and uncertainties,
including those due to the impact of the Pandemic, that could cause our
financial and operating results and capital requirements to differ materially
from our projections, which could cause future liquidity to differ materially
from our assessment. See "Risk Factors - Risk Related to our
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Business and Wireless Industry - The Pandemic has adversely affected, and will
continue to adversely affect, our business, liquidity, financial condition, and
operating results."

The indentures, supplemental indentures and credit agreements governing our
long-term debt to affiliates and third parties, excluding financing leases,
contain covenants that, among other things, limit the ability of the Issuers or
borrowers and the Guarantor Subsidiaries to incur more debt, pay dividends and
make distributions on our common stock, make certain investments, repurchase
stock, create liens or other encumbrances, enter into transactions with
affiliates, enter into transactions that restrict dividends or distributions
from subsidiaries, and merge, consolidate or sell, or otherwise dispose of,
substantially all of their assets. Certain provisions of each of the credit
agreements, indentures and supplemental indentures relating to the long-term
debt to affiliates and third parties restrict the ability of the Issuers or
borrowers to loan funds or make payments to Parent. However, the Issuers or
borrowers are allowed to make certain permitted payments to Parent under the
terms of each of the credit agreements, indentures and supplemental indentures
relating to the long-term debt to affiliates and third parties. We were in
compliance with all restrictive debt covenants as of December 31, 2020.

The Merger



In connection with the closing of the Merger, on April 1, 2020, we assumed
Sprint's liabilities, which include accounts payable and accrued liabilities,
short-term debt, operating and financing lease liabilities, net pension plan
liabilities, deferred tax liabilities and long-term debt with an aggregate fair
value of $31.8 billion.

For more information regarding the Merger, see Note 2 - Business Combination of the Notes to the Consolidated Financial Statements.

Shentel Wireless Asset Acquisition



Sprint PCS (specifically Sprint Spectrum L.P.) is party to a variety of publicly
filed agreements with Shenandoah Personal Communications Company LLC
("Shentel"), pursuant to which Shentel is the exclusive provider of Sprint PCS's
wireless mobility communications network products in certain parts of Maryland,
North Carolina, Virginia, West Virginia, Kentucky, Ohio and Pennsylvania.
Pursuant to one such agreement, the Sprint PCS Management Agreement, dated
November 5, 1999 (as amended, supplemented and modified from time to time, the
"Management Agreement"), Sprint PCS was granted an option to purchase Shentel's
wireless telecommunications assets used to provide services pursuant to the
Management Agreement. On August 26, 2020, Sprint, now our indirect subsidiary,
on behalf of and as the direct or indirect owner of Sprint PCS, exercised its
option by delivering a binding notice of exercise to Shentel. T-Mobile's
exercise of its option triggered a requirement for the parties to engage three
independent valuation providers (the "Valuation Providers") to calculate the
"entire business value" (the "Entire Business Value") of such wireless
telecommunications assets, pursuant to a formula and valuation process
prescribed in the Management Agreement.

Subsequent to December 31, 2020, on February 1, 2021, in accordance with the
Management Agreement and other agreed-upon terms, the Valuation Providers
determined and calculated the Entire Business Value of Shentel's wireless
telecommunications assets used to provide services pursuant to the Management
Agreement to be $2.1 billion, and correspondingly, the base purchase price for
such wireless telecommunications assets shall be ninety percent (90%) of that
Entire Business Value amount ($1.9 billion), subject to certain other purchase
price adjustments prescribed by the Management Agreement and such additional
purchase price adjustments agreed by the parties. The parties are negotiating
the remaining outstanding terms of a definitive agreement to govern the purchase
of Shentel's wireless telecommunication assets and expect the transaction to
close in the second quarter of 2021 after satisfying customary conditions to
closing.

Financing Lease Facilities

We have entered into uncommitted financing lease facilities with certain
partners that provide us with the ability to enter into financing leases for
network equipment and services. As of December 31, 2020, we have committed to
$5.1 billion of financing leases under these financing lease facilities, of
which $1.2 billion was executed during the year ended December 31, 2020. We
expect to enter into up to an additional $1.2 billion in financing lease
commitments during the year ending December 31, 2021.

Capital Expenditures



Our liquidity requirements have been driven primarily by capital expenditures
for spectrum licenses, the construction, expansion and upgrading of our network
infrastructure and the integration of the networks, spectrum, technology,
personnel, customer base and business practices of T-Mobile and Sprint. Property
and equipment capital expenditures primarily relate to the integration of our
acquired Sprint 2.5 GHz spectrum licenses and existing 600 MHz spectrum licenses
as we build out our
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nationwide 5G network. We expect the majority of our remaining capital
expenditures related to these efforts to occur in 2021 and 2022, after which we
expect capital expenditure requirements to reduce.

We expect cash purchases of property and equipment to range from $11.7 billion to $12.0 billion in 2021.

For more information regarding our property and equipment and spectrum licenses, see Note 5 - Property and Equipment and Note 6 - Goodwill, Spectrum License Transactions and Other Intangible Assets of the Notes to the Consolidated Financial Statements, respectively.

Dividends



We have never paid or declared any cash dividends on our common stock, and we do
not intend to declare or pay any cash dividends on our common stock in the
foreseeable future. Our credit facilities and the indentures and supplemental
indentures governing our long-term debt to affiliates and third parties,
excluding financing leases, contain covenants that, among other things, restrict
our ability to declare or pay dividends on our common stock.

Contractual Obligations

In connection with the regulatory approvals of the Transactions, we made commitments to various state and federal agencies, including the U.S. Department of Justice's (the "DOJ") and FCC.

For more information regarding these commitments, see Note 1 8 - Commitments and Contingencies of the Notes to the Consolidated Financial Statements.



The contractual commitments and purchase obligations of Sprint were assumed upon
the completion of the Merger. These contractual commitments and purchase
obligations are primarily commitments to purchase wireless devices, network
services, equipment, software, marketing sponsorship agreements and other items
in the ordinary course of business.

For more information regarding our contractual commitments and purchase obligations, see Note 1 8 - Commitments and Contingencies of the Notes to the Consolidated Financial Statements.



The following table summarizes our contractual obligations and borrowings as of
December 31, 2020, and the timing and effect that such commitments are expected
to have on our liquidity and capital requirements in future periods:
                                 Less Than 1                                                     More Than 5
(in millions)                       Year              1 - 3 Years           4 - 5 Years             Years               Total
Long-term debt (1)              $    4,486          $     11,960          $

9,891 $ 43,052 $ 69,389 Interest on long-term debt

           3,477                 5,938                 4,317               13,817             27,549
Financing lease liabilities,
including imputed interest           1,121                 1,217                   229                   61              2,628
Tower obligations (2)                  397                   716                   598                  624              2,335
Operating lease liabilities,
including imputed interest           4,903                 8,113                 6,146               18,940             38,102
Purchase obligations (3)             5,033                 4,462                 2,392                1,723             13,610
Spectrum leases and service
credits (4)                            338                   675                   594                5,077              6,684

Total contractual obligations $ 19,755 $ 33,081 $

24,167 $ 83,294 $ 160,297




(1)Represents principal amounts of long-term debt to affiliates and third
parties at maturity, excluding unamortized premiums, discounts, debt issuance
costs, consent fees, and financing lease obligations. See   Note 8 - Debt   of
the Notes to the Consolidated Financial Statements for further information.
(2)Future minimum payments, including principal and interest payments, related
to the tower obligations. See   Note 9 - Tower Obligations   of the Notes to the
Consolidated Financial Statements for further information.
(3)The minimum commitment for certain obligations is based on termination
penalties that could be paid to exit the contracts. Termination penalties are
included in the above table as payments due as of the earliest we could exit the
contract, typically in less than one year. For certain contracts that include
fixed volume purchase commitments and fixed prices for various products, the
purchase obligations are calculated using fixed volumes and contractually fixed
prices for the products that are expected to be purchased. This table does not
include open purchase orders as of December 31, 2020 under normal business
purposes. See   Note 1    8     - Commitments and Contingencies   of the Notes
to the Consolidated Financial Statements for further information.
(4)Spectrum lease agreements are typically for five to 10 years with automatic
renewal provisions, bringing the total term of the agreements up to 30 years.

Certain commitments and obligations are included in the table based on the year
of required payment or an estimate of the year of payment. Other long-term
liabilities have been omitted from the table above due to the uncertainty of the
timing of payments, combined with the lack of historical trends to predict
future payments. See   Note     20     - Additional Financial Information   of
the Notes to the Consolidated Financial Statements for further information.
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The purchase obligations reflected in the table above are primarily commitments
to purchase spectrum licenses, wireless devices, network services, equipment,
software, marketing sponsorship agreements and other items in the ordinary
course of business. These amounts do not represent our entire anticipated
purchases in the future, but represent only those items for which we are
contractually committed. Where we are committed to make a minimum payment to the
supplier regardless of whether we take delivery, we have included only that
minimum payment as a purchase obligation. The acquisition of spectrum licenses
is subject to regulatory approval and other customary closing conditions.

Related Party Transactions

SoftBank



On February 20, 2020, T-Mobile, SoftBank and DT entered into a Letter Agreement
as described in   Note 2 -     Business Combination  . The Letter Agreement
requires T-Mobile to issue to SoftBank 48,751,557 shares of T-Mobile common
stock, subject to the terms and conditions set forth in the Letter Agreement,
for no additional consideration, if certain conditions are met.

On June 22, 2020, we entered into a Master Framework Agreement and related
transactions with SoftBank to facilitate the SoftBank Monetization as described
in   Note 14 - SoftBank Equity Transaction   of the Notes to the Consolidated
Financial Statements. As of December 31, 2020, DT and SoftBank held, directly or
indirectly, approximately 43.4% and 8.6%, respectively, of our outstanding
common stock, with the remaining approximately 48.0% of our outstanding common
stock held by other stockholders. As a result of the Proxy Agreements, DT has
voting control as of December 31, 2020, over approximately 52.3% of the
outstanding T-Mobile common stock. In addition, as provided for in the Master
Framework Agreement, DT also holds certain call options over approximately 101.5
million shares of our common stock held by SoftBank Group Capital Ltd., a wholly
owned subsidiary of SoftBank.

On July 27, 2020, in connection with the SoftBank Monetization, the Rights Offering exercise period closed, and on August 3, 2020, the Rights Offering closed, resulting in the sale of 19,750,000 shares of our common stock.

For more information regarding our related party transactions with SoftBank, see

Note 2 - Business Combination and Note 14 - SoftBank Equity Transaction of the Notes to the Consolidated Financial Statements.

Marcelo Claure



On June 22, 2020, we entered into a Master Framework Agreement which provided
for the purchase of shares of our common stock by Marcelo Claure, a member of
our board of directors, from us at a specified price.

For more information regarding our related party transactions with Marcelo Claure, see Note 14 - SoftBank Equity Transaction of the Notes to the Consolidated Financial Statements.

Brightstar

We had arrangements with Brightstar, a subsidiary of SoftBank, whereby Brightstar provided supply chain and inventory management services to us in our indirect channels.

For more information regarding our related party transactions with Brightstar, see Note 1 - Summary of Significant Accounting Policies and Note

20 - Additional Financial Information of the Notes to the Consolidated Financial Statements.



Deutsche Telekom

We have related party transactions associated with DT or its affiliates in the ordinary course of business, including intercompany servicing and licensing.

For more information regarding these transactions, see Note 20 - Additional Financial Information of the Notes to the Consolidated Financial Statements.



On April 1, 2020, in connection with the closing of the Merger, we repaid our
$4.0 billion Incremental Term Loan Facility with DT and repurchased from DT $4.0
billion of indebtedness to affiliates, consisting of $2.0 billion of 5.300%
Senior Notes due
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On July 4, 2020, we redeemed $1.25 billion aggregate principal amount of our 5.125% Senior Notes to affiliates due 2021.

For more information regarding our related party debt transactions, see Note 8 - Debt of the Notes to the Consolidated Financial Statements.

Disclosure of Iranian Activities under Section 13(r) of the Securities Exchange Act of 1934



Section 219 of the Iran Threat Reduction and Syria Human Rights Act of 2012
added Section 13(r) to the Exchange Act of 1934, as amended ("Exchange
Act"). Section 13(r) requires an issuer to disclose in its annual or quarterly
reports, as applicable, whether it or any of its affiliates knowingly engaged in
certain activities, transactions or dealings relating to Iran or with designated
natural persons or entities involved in terrorism or the proliferation of
weapons of mass destruction. Disclosure is required even where the activities,
transactions or dealings are conducted outside the U.S. by non-U.S. affiliates
in compliance with applicable law, and whether or not the activities are
sanctionable under U.S. law.

As of the date of this report, we are not aware of any activity, transaction or
dealing by us or any of our affiliates for the year ended December 31, 2020,
that requires disclosure in this report under Section 13(r) of the Exchange Act,
except as set forth below with respect to affiliates that we do not control and
that are our affiliates solely due to their common control with either DT or
SoftBank. We have relied upon DT and SoftBank for information regarding their
respective activities, transactions and dealings.

DT, through certain of its non-U.S. subsidiaries, is party to roaming and
interconnect agreements with the following mobile and fixed line
telecommunication providers in Iran, some of which are or may be
government-controlled entities: Irancell Telecommunications Services Company,
Telecommunication Kish Company, Mobile Telecommunication Company of Iran, and
Telecommunication Infrastructure Company of Iran. In addition, during the year
ended December 31, 2020, DT, through certain of its non-U.S. subsidiaries,
provided basic telecommunications services to three customers in Germany
identified on the Specially Designated Nationals and Blocked Persons List
maintained by the U.S. Department of Treasury's Office of Foreign Assets
Control: Bank Melli, Bank Sepah, and Europäisch-Iranische Handelsbank. These
services have been terminated or are in the process of being terminated. For the
year ended December 31, 2020, gross revenues of all DT affiliates generated by
roaming and interconnection traffic and telecommunications services with the
Iranian parties identified herein were less than $0.1 million, and the estimated
net profits were less than $0.1 million.

In addition, DT, through certain of its non-U.S. subsidiaries that operate a
fixed-line network in their respective European home countries (in particular
Germany), provides telecommunications services in the ordinary course of
business to the Embassy of Iran in those European countries. Gross revenues and
net profits recorded from these activities for the year ended December 31, 2020
were less than $0.1 million. We understand that DT intends to continue these
activities.

Separately, SoftBank, through one of its non-U.S. subsidiaries, provides roaming
services in Iran through Irancell Telecommunications Services Company. During
the nine months from the acquisition of Sprint on April 1, 2020 through
December 31, 2020, SoftBank had no gross revenues from such services and no net
profit was generated. We understand that the SoftBank subsidiary intends to
continue such services. This subsidiary also provides telecommunications
services in the ordinary course of business to accounts affiliated with the
Embassy of Iran in Japan. During the nine months from the acquisition of Sprint
on April 1, 2020 through December 31, 2020, SoftBank estimates that gross
revenues and net profit generated by such services were both under $0.1 million.
We understand that the SoftBank subsidiary is obligated under contract and
intends to continue such services.

In addition, SoftBank, through one of its non-U.S. indirect subsidiaries,
provides office supplies to the Embassy of Iran in Japan. SoftBank estimates
that gross revenue and net profit generated by such services during the nine
months from the acquisition of Sprint on April 1, 2020 through December 31,
2020, were both under $0.1 million. We understand that the SoftBank subsidiary
intends to continue such activities.

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Off-Balance Sheet Arrangements

We have arrangements, as amended from time to time, to sell certain EIP accounts
receivable and service accounts receivable on a revolving basis as a source of
liquidity. As of December 31, 2020, we derecognized net receivables of $2.5
billion upon sale through these arrangements.

For more information regarding these off-balance sheet arrangements, see   Note
4 - Sales of Certain Receivables   of the Notes to the Consolidated Financial
Statements.

Critical Accounting Policies and Estimates



Our significant accounting policies are fundamental to understanding our results
of operations and financial condition as they require that we use estimates and
assumptions that may affect the value of our assets or liabilities and financial
results. See   Note 1 - Summary of Significant Accounting Policies   of the
Notes to the Consolidated Financial Statements for further information.

Three of these policies, discussed below, are critical because they require
management to make difficult, subjective and complex judgments about matters
that are inherently uncertain and because it is likely that materially different
amounts would be reported under different conditions or using different
assumptions. Actual results could differ from those estimates.

Management and the Audit Committee of the Board of Directors have reviewed and approved these critical accounting policies.

Depreciation



Our property and equipment balance represents a significant component of our
consolidated assets. We record property and equipment at cost, and we generally
depreciate property and equipment on a straight-line basis over the estimated
useful life of the assets. If all other factors were to remain unchanged, we
expect that a one-year increase in the useful lives of our in-service property
and equipment, exclusive of leased devices, would have resulted in a decrease of
approximately $2.9 billion in our 2020 depreciation expense and that a one-year
decrease in the useful life would have resulted in an increase of approximately
$3.5 billion in our 2020 depreciation expense.

See Note 1 - Summary of Significant Accounting Policies and Note 5 - Property and Equipment of the Notes to the Consolidated Financial Statements for information regarding depreciation of assets, including management's underlying estimates of useful lives.

Evaluation of Goodwill and Indefinite-Lived Intangible Assets for Impairment

Goodwill and other indefinite-lived intangible assets, such as our spectrum
licenses, are not amortized but tested for potential impairment annually, as of
December 31, or more frequently if events or changes in circumstances indicate
such assets might be impaired.

We test goodwill on a reporting unit basis by comparing the estimated fair value
of each reporting unit to its book value. If the fair value exceeds the book
value, then no impairment is measured. We have identified two reporting units
for which discrete financial information is available and results are regularly
reviewed by management: wireless and Layer3. The Layer3 reporting unit consists
of the assets and liabilities of Layer3 TV, Inc., which was acquired in January
2018. The services provided by the Layer3 reporting unit are branded TVisionTM.
The wireless reporting unit consists of the remaining assets and liabilities of
T-Mobile US, Inc., excluding Layer3 TV, Inc. We separately evaluate these
reporting units for impairment.

When assessing goodwill for impairment we may elect to first perform a
qualitative assessment for a reporting unit to determine if the quantitative
impairment test is necessary. If we do not perform a qualitative assessment, or
if the qualitative assessment indicates it is more likely than not that the fair
value of a reporting unit is less than its carrying amount, we perform a
quantitative test. We recognize an impairment charge for the amount by which the
carrying amount exceeds the reporting unit's fair value; however, the loss
recognized would not exceed the total amount of goodwill allocated to that
reporting unit. We employed a qualitative approach to assess the wireless
reporting unit. The fair value of the wireless reporting unit is determined
using a market approach, which is based on market capitalization. We recognize
market capitalization is subject to volatility and will monitor changes in
market capitalization to determine whether declines, if any, necessitate an
interim impairment review. In the event market capitalization does decline below
its book value, we will consider the length, severity and reasons for the
decline when assessing whether potential impairment exists, including
considering whether a control premium should be added to the market
capitalization. We believe short-term fluctuations in share price may not
necessarily reflect the underlying
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aggregate fair value. No events or change in circumstances have occurred that
indicate the fair value of the wireless reporting unit may be below its carrying
amount at December 31, 2020.

Concurrent with the consummation of the Merger, management also revisited the
plans for our TVisionTM services offering and the integration of this offering
with the Sprint customer base. Additionally, we expect our significantly
enhanced spectrum position following the Merger will allow us to accelerate our
in-home broadband internet service strategy. The enhanced in-home broadband
opportunity, along with the acquisition of certain content rights, created a
strategic shift in our TVisionTM services offering allowing us the ability to
develop a video product which will be complementary to the in-home broadband
offering. Based on these events and changes in circumstances, we determined that
recoverability of the carrying amount of goodwill for the Layer3 reporting unit
should be evaluated for impairment. We employed a quantitative approach to
assess the Layer3 reporting unit. The fair value of the Layer3 reporting unit
was determined using an income approach, which was based on estimated discounted
future cash flows.

We made estimates and assumptions regarding future cash flows, discount rates and long-term growth rates to determine the reporting unit's estimated fair value. The key assumptions used were as follows:



•Expected cash flows underlying the TVisionTM business plan for the periods 2020
through 2025, which took into account assumptions for a delayed launch,
estimates of subscribers for TVisionTM services, average revenue and content
cost per subscriber, operating costs and capital expenditures;
•Cash flows beyond 2025 were projected to grow at a long-term growth rate
estimated at 3%. Estimating a long-term growth rate requires significant
judgment about future business strategies as well as micro- and macro-economic
environments that are inherently uncertain; and
•We used a discount rate of 30% to risk adjust the cash flow projections in
determining the estimated fair value.

The carrying value of the Layer3 reporting unit exceeded its estimated fair
value as of June 30, 2020. Accordingly, during the year ended December 31, 2020,
we recorded an impairment loss of $218 million, which is included in Impairment
expense in our Consolidated Statements of Comprehensive Income. This impairment
reduced the goodwill assigned to the Layer3 reporting unit to zero.

We test spectrum licenses for impairment on an aggregate basis, consistent with
our management of the overall business at a
national level. We may elect to first perform a qualitative assessment to
determine whether it is more likely than not that the fair value of an
intangible asset is less than its carrying value. If we do not perform the
qualitative assessment, or if the qualitative
assessment indicates it is more likely than not that the fair value of the
intangible asset is less than its carrying amount, we calculate the estimated
fair value of the intangible asset. If the estimated fair value of the spectrum
licenses is lower than their carrying amount, an impairment loss is recognized.
We estimate fair value using the Greenfield methodology, which is an income
approach, to estimate the price at which an orderly transaction to sell the
asset would take place between market participants at the measurement date under
current market conditions. The Greenfield methodology values the spectrum
licenses by calculating the cash flow generating potential of a hypothetical
start-up company that goes into business with no assets except the asset to be
valued (in this case, spectrum licenses) and makes investments required to build
an operation comparable to current use. The value of the spectrum licenses can
be considered as equal to the present value of the cash flows of this
hypothetical start-up company. We base the assumptions underlying the Greenfield
methodology on a combination of market participant data and our historical
results, trends and business plans. Future cash flows in the Greenfield
methodology are based on estimates and assumptions of market participant
revenues, EBITDA margin, network build-out period and a long-term growth rate
for a market participant. The cash flows are discounted using a weighted average
cost of capital.

The valuation approaches utilized to estimate fair value for the purposes of the
impairment tests of goodwill and spectrum
licenses require the use of assumptions and estimates, which involve a degree of
uncertainty. If actual results or future
expectations are not consistent with the assumptions, this may result in the
recording of significant impairment charges on
goodwill or spectrum licenses. The most significant assumptions within the
valuation models are the discount rate, revenues,
EBITDA margins, capital expenditures and long-term growth rate.

For more information regarding our impairment assessments, see Note 1 - Summary of Significant Accounting Policies and Note 6 - Goodwill, Spectrum License Transactions and Other Intangible Assets of the Notes to the Consolidated Financial Statements.


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Income Taxes

Deferred tax assets and liabilities are recognized based on temporary
differences between the financial statement and tax bases of assets and
liabilities using enacted tax rates expected to be in effect when these
differences are realized. A valuation allowance is recorded when it is more
likely than not that some portion or all of a deferred tax asset will not be
realized. The ultimate realization of a deferred tax asset depends on the
ability to generate sufficient taxable income of the appropriate character and
in the appropriate taxing jurisdictions within the carryforward periods
available.

We account for uncertainty in income taxes recognized in the financial
statements in accordance with the accounting guidance for the financial
statement recognition and measurement of a tax position taken or expected to be
taken in a tax return. We assess whether it is more likely than not that a tax
position will be sustained upon examination based on the technical merits of the
position and adjust the unrecognized tax benefits in light of changes in facts
and circumstances, such as changes in tax law, interactions with taxing
authorities and developments in case law.

Accounting Pronouncements Not Yet Adopted



For information regarding recently issued accounting standards, see   Note 1 -
Summary of Significant Accounting Policies   of the Notes to the Consolidated
Financial Statements.

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