• 1.6 million total net additions – 21st consecutive quarter with more than 1 million net additions
• 1.0 million total branded postpaid net additions – supported by continued strong postpaid other net additions
• 686,000 branded postpaid phone net additions – led industry for the 18th consecutive quarter
• 91,000 branded prepaid net additions – flat year-over-year despite increased competitive activity in the market
• Record low 0.95% branded postpaid phone churn, down 15 bps year-over-year

• Service revenues up 7% to $7.9 billion - led industry for the 17th consecutive quarter
• Total revenues up 4% to $10.6 billion
• Net income up 35% to $782 million and diluted earnings per share (EPS) of $0.92
• Adjusted EBITDA⁽¹⁾ up 7% to $3.2 billion
• Net cash provided by operating activities⁽³⁾ up 14% to $1.3 billion
• Free Cash Flow⁽¹⁾⁽³⁾ up 61% to $774 million

• T-Mobile now covers 323 million people with 4G LTE - targeting 325 million people by year-end 2018
• Aggressive deployment of 600 MHz in Q2 2018, augmenting existing low-band capabilities on 700 MHz
• Fastest LTE network according to Ookla; outright winner in 5 of 7 categories in most recent OpenSignal study

• Increased target for branded postpaid net customer additions of 3.0 to 3.6 million
• Net income is not available on a forward-looking basis⁽²⁾
• Increased Adjusted EBITDA target of $11.5 to $11.9 billion including leasing revenues of $0.6 to $0.7 billion⁽¹⁾
• Cash purchases of property and equipment, excluding capitalized interest, of $4.9 to $5.3 billion, unchanged from the prior target range, now expected to come in at the high end of the range. This includes expenditures for 5G deployment
• Three-year compound annual growth rates (CAGRs) for Net cash provided by operating activities and Free Cash Flow from FY 2016 to FY 2019 also unchanged at 7% - 12% and 46% - 48%, respectively⁽¹⁾⁽³⁾

T-Mobile US, Inc. (NASDAQ:TMUS) reported record results in the second quarter of 2018 with industry-leading branded customer growth, record-high service revenues, record-high Q2 profitability, and record-low postpaid phone churn. The Un-carrier has changed wireless for good and proven that putting customers first is the best way to deliver sustained, industry-leading results. T-Mobile continues to balance growth and profitability - delivering records in both categories in the second quarter of 2018.

T-Mobile once again outperformed the competition as the company continues to optimize its offers for key segments of the market, expand into new geographies and set the standard for customer experience. This has resulted in growth in postpaid phone net additions both sequentially and year-over-year as the Un-carrier again leads the industry in the second quarter with nearly twice the aggregate postpaid phone net additions of Verizon, AT&T, Sprint and Comcast combined and more than three times the net additions of our next closest competitor, Comcast. In addition, the company delivered record-low postpaid phone churn of 0.95% - the best result in company history. These results have translated into record-high service revenues, which T-Mobile has now grown year-over-year for 17 quarters in a row.

• Total net customer additions were 1.6 million in Q2 2018, bringing our total customer count to 75.6 million. Q2 2018 marked the 21st straight quarter in which T-Mobile generated more than 1 million total net customer additions.
• Branded postpaid net customer additions were 1.0 million in Q2 2018, up 200,000 from Q2 2017. Strength in postpaid phone net additions and postpaid other net additions, driven by wearables, drove the year-over-year increase.
• Branded postpaid phone net customer additions were 686,000 in Q2 2018, up 153,000 from Q2 2017. This marks the 18th consecutive quarter in which T-Mobile has led the industry in this category. Sequentially and year-over-year, branded postpaid phone net customer additions increased due to continued growth in existing and Greenfield markets, the growing success of new customer segments such as T-Mobile for Business, T-Mobile ONE Unlimited 55+, and T-Mobile ONE Military, as well as record-low churn.
• Branded postpaid other net customer additions were 331,000 in Q2 2018, up 47,000 from Q2 2017. Year-over-year the increase was due to higher gross customer additions from connected devices, specifically the Apple watch, partially offset by lower DIGITS gross customer additions and higher deactivations from a growing customer base.
• Branded postpaid phone churn was a record-low of 0.95% in Q2 2018, down 15 basis points from Q2 2017, primarily due to increased customer satisfaction and loyalty from ongoing improvements to network quality, industry-leading customer service and the overall value of our offerings in the marketplace.
• Branded prepaid net customer additions were 91,000 in Q2 2018, down 3,000 from Q2 2017.
• Branded prepaid churn was 3.81% in Q2 2018, down 10 basis points compared to Q2 2017, primarily due to the continued impact from the optimization of our third-party distribution channels which was substantially completed during Q1 2017, partially offset by higher deactivations from a growing customer base and increased competitive activity in the marketplace.

• Total service revenues increased 7% year-over-year to a record-high $7.9 billion, which marked the 17th consecutive quarter of leading the industry in year-over-year service revenue percentage growth.
• Total revenues increased 4% year-over-year to $10.6 billion, driven primarily by growth in service revenues, partially offset by lower equipment revenues.
• Branded postpaid phone Average Revenue per User (ARPU) was $46.52 in Q2 2018, down 0.3% from Q1 2018 and 1.2% from Q2 2017. Sequentially, the decrease was due to the continued adoption of tax inclusive plans. Year-over-year, the decrease was primarily due to the continued adoption of tax inclusive plans, a decrease in the non-cash net benefit from Data Stash, partially offset by the positive impact from our T-Mobile ONE rate plans and a net reduction in service promotional activities. For full-year 2018, we continue to expect branded postpaid phone ARPU to be generally stable compared to full-year 2017, excluding the impact from the new revenue standard.
• Branded prepaid ARPU was $38.48 in Q2 2018, down 0.4% from Q2 2017, primarily due to promotional activities.
• Net income increased 35% year-over-year to a strong $782 million in Q2 2018. The positive impacts to net income in Q2 2018 from the adoption of the new revenue standard and hurricane related reimbursements were $62 million and $45 million, respectively. The negative impact to net income in Q2 2018 from the proposed Sprint transaction was $39 million.
• EPS increased by $0.25 to $0.92 in Q2 2018. The positive impacts to EPS in Q2 2018 from the adoption of the new revenue standard and hurricane related reimbursement were $0.07 and $0.06, respectively. The negative impact to EPS in Q2 2018 from the proposed Sprint transaction was $0.05.
• Adjusted EBITDA increased 7% year-over-year to a record-high $3.2 billion in Q2 2018. The positive impacts to Adjusted EBITDA in Q2 2018 from the adoption of the new revenue standard and hurricane related reimbursements were $84 million and $70 million, respectively.
• Cash purchases of property and equipment increased by 21% year-over-year to $1.6 billion primarily from continued deployment of our low band spectrum, including 600 MHz. Cash purchases of property and equipment included capitalized interest of $102 million in Q2 2018 and $34 million in Q2 2017.
• Net cash provided by operating activities increased 14.0% year-over-year to $1.3 billion in Q2 2018. The increase resulted from an increase in net income, partially offset by higher net cash outflows from working capital.
• Free Cash Flow increased 61% year-over-year to $774 million in Q2 2018 due to higher proceeds related to our deferred purchase price from securitization transactions and higher net cash provided by operating activities, partially offset by higher cash capex.

• Operating America's Fastest 4G LTE network. In Q2 2018, we were once again the nation's fastest LTE network, realizing average 4G LTE download speeds of 31.8 Mbps, and average 4G LTE upload speeds of 11.9 Mbps. This was the 18th consecutive quarter that we have led the industry in both download and upload speeds.
• Leading in Ookla's "2018 U.S. Mobile Performance Report." In H1 2018, millions of actively initiated tests showed that T-Mobile customers receive the fastest speeds nationwide including fastest speeds in 31 states, in rural areas, and tied for first for fastest speeds in the Top 100 metropolitan areas.
• Winning 5 out of 7 categories outright in OpenSignal's "State of Mobile Networks: USA" report. Based on billions of measurements, T-Mobile won in 4G download speed, 3G download speed, overall download speed, 4G upload speed, and 3G latency. T-Mobile also tied for first in 4G availability, providing customers with an LTE signal 94% of the time.
• Expanding our coverage breadth. T-Mobile now covers 323 million people with 4G LTE. By the end of 2018, we are targeting to cover 325 million people.
• Clearing and deploying 600 MHz spectrum. At the end of Q2 2018, T-Mobile owned a nationwide average of 31 MHz of 600 MHz low band spectrum covering 328 million POPs. We expect to clear spectrum covering approximately 130 million POPs by year-end 2018 and target approximately 260 million POPs by year-end 2019. 600MHz deployments continue at an accelerated pace with spectrum covering more than 950 cities and towns in 33 states already lit up. Combining 600MHz and 700MHz, we have deployed low band spectrum to nearly 289 million POPs.
• Introducing 5G across 600 MHz and millimeter wave spectrum. In addition to building out 5G on 600 MHz, T-Mobile intends to bring 5G to 30 cities in 2018 using both 600 MHz and millimeter wave spectrum. The network will harness 4G and 5G bandwidths simultaneously (dual connectivity) and will be ready for the introduction of the first 5G smartphones in 2019.

Adjusted EBITDA is expected to be between $11.5 and $11.9 billion, an increase from the prior target range of $11.4 to $11.8 billion. Our Adjusted EBITDA target includes leasing revenues of $0.6 to $0.7 billion, unchanged from the prior guidance. Including the estimated impact of the new revenue standard, Adjusted EBITDA is expected to increase by an additional $0.2 to $0.5 billion for a total guidance range of $11.7 to $12.4 billion.

The adoption of the new cash flow accounting standard resulted in a reclassification of cash flows related to our deferred purchase price from securitization transactions from operating activities to investing activities. In addition, cash flows related to debt prepayment and extinguishment costs were reclassified from operating activities to financing activities. In Q1 2018, we redefined Free Cash Flow to reflect the above changes in classification and present cash flows on a consistent basis for investor transparency. Please see the reconciliation of non-GAAP measures in this earnings release for details on the revised definition, which was applied retroactively to 2017.

• Service revenues $(0.2) - $(0.1) billion
• Total revenues $0.3 - $0.5 billion
• Operating expenses $(0.1) - $0.1 billion
• Net income $0.2 - $0.4 billion
• Adjusted EBITDA $0.2 - $0.5 billion
• We expect postpaid phone ARPU to be negatively affected by changes in revenue allocation under the new revenue standard.

For more details on T-Mobile's Q2 2018 financial results, including the Investor Factbook with detailed financial tables and reconciliations of certain historical non-GAAP measures disclosed in this release to the most comparable measures under GAAP, please visit T-Mobile US, Inc.'s Investor Relations website at http://investor.t-mobile.com.

Investors and others should note that we announce material financial and operational information to our investors using our investor relations website, press releases, SEC filings and public conference calls and webcasts. We also intend to use the @TMobileIR Twitter account (https://twitter.com/TMobileIR) and the @JohnLegere Twitter (https://twitter.com/JohnLegere), Facebook and Periscope accounts, which Mr. Legere also uses as a means for personal communications and observations, as means of disclosing information about the Company and its services and for complying with its disclosure obligations under Regulation FD. The information we post through these social media channels may be deemed material. Accordingly, investors should monitor these social media channels in addition to following our press releases, SEC filings and public conference calls and webcasts. The social media channels that we intend to use as a means of disclosing the information described above may be updated from time to time as listed on our investor relations website.

As America's Un-carrier, T-Mobile US, Inc. (NASDAQ:TMUS) is redefining the way consumers and businesses buy wireless services through leading product and service innovation. Our advanced nationwide 4G LTE network delivers outstanding wireless experiences to approximately 76 million customers who are unwilling to compromise on quality and value. Based in Bellevue, Washington, T-Mobile US provides services through its subsidiaries and operates its flagship brands, T-Mobile and MetroPCS. For more information, please visit http://www.t-mobile.com or join the conversation on Twitter using $TMUS.

The earnings call will be broadcast live via our Investor Relations website at http://investor.t-mobile.com. A replay of the earnings call will be available for two weeks starting shortly after the call concludes and can be accessed by dialing 888-203-1112 (toll free) or +1 719-457-0820 (international). The passcode required to listen to the replay is 7079522.

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This news release includes "forward-looking statements" within the meaning of the U.S. federal securities laws. Any statements made herein that are not statements of historical fact, including statements about T-Mobile US, Inc.'s plans, outlook, beliefs, opinions, projections, guidance, strategy, store openings, position within the industry relative to its competitors, deployment of spectrum and expected network modernization and other advancements, are forward-looking statements. Generally, forward-looking statements may be identified by words such as "anticipate," "expect," "suggests," "plan," "project," "believe," "intend," "estimates," "targets," "views," "may," "will," "forecast," "outlook," and other similar expressions. The forward-looking statements speak only as of the date made, are based on current assumptions and expectations, and involve a number of risks and uncertainties. Important factors that could affect future results and cause those results to differ materially from those expressed in the forward-looking statements include, among others, the following: the failure to obtain, or delays in obtaining, required regulatory approvals for the proposed transaction with Sprint, and the risk that such approvals may result in the imposition of conditions that could adversely affect the combined company or the expected benefits of the proposed transaction with Sprint Corporation ("Sprint"), or the failure to satisfy any of the other conditions to the proposed transaction with Sprint on a timely basis or at all; the occurrence of events that may give rise to a right of one or both of the parties to terminate the Business Combination Agreement with Sprint; adverse effects on the market price of our or Sprint's common stock and on our or Sprint's operating results because of a failure to complete the proposed transaction in the anticipated timeframe or at all; inability to obtain the financing contemplated to be obtained in connection with the proposed transaction on the expected terms or timing or at all; the ability of us, Sprint and the combined company to make payments on debt or to repay existing or future indebtedness when due or to comply with the covenants contained therein; adverse changes in the ratings of our or Sprint's debt securities or adverse conditions in the credit markets; negative effects of the announcement, pendency or consummation of the proposed transaction on the market price of our or Sprint's common stock and on our or Sprint's operating results, including as a result of changes in key customer, supplier, employee or other business relationships; significant costs related to the proposed transaction, including financing costs, and unknown liabilities; failure to realize the expected benefits and synergies of the proposed transaction in the expected timeframes or at all; costs or difficulties related to the integration of Sprint's network and operations into our network and operations; the risk of litigation or regulatory actions related to the proposed transaction; the inability of us, Sprint or the combined company to retain and hire key personnel; the risk that certain contractual restrictions contained in the Business Combination Agreement during the pendency of the proposed transaction could adversely affect our or Sprint's ability to pursue business opportunities or strategic transactions; effects of changes in the regulatory environment in which we and Sprint operate; adverse economic or political conditions in the U.S. and international markets; competition, industry consolidation, and changes in the market for wireless services could negatively affect our ability to attract and retain customers; the effects of any future merger, investment, or acquisition involving us, as well as the effects of mergers, investments, or acquisitions in the technology, media and telecommunications industry; challenges in implementing our business strategies or funding our operations, including payment for additional spectrum or network upgrades; the possibility that we may be unable to renew our spectrum licenses on attractive terms or acquire new spectrum licenses at reasonable costs and terms; difficulties in managing growth in wireless data services, including network quality; material changes in available technology and the effects of such changes, including product substitutions and deployment costs and performance; the timing, scope and financial impact of our deployment of advanced network and business technologies; the impact on our networks and business from major technology equipment failures; breaches of our and/or our third-party vendors' networks, information technology and data security; natural disasters, terrorist attacks or similar incidents; unfavorable outcomes of existing or future litigation; any changes in the regulatory environments in which we operate, including any increase in restrictions on the ability to operate our networks; any disruption or failure of our third parties' or key suppliers' provisioning of products or services; material adverse changes in labor matters, including labor campaigns, negotiations or additional organizing activity, and any resulting financial, operational and/or reputational impact; the ability to make payments on our debt or to repay our existing indebtedness when due or to comply with the covenants contained therein; adverse change in the ratings of our debt securities or adverse conditions in the credit markets; changes in accounting assumptions that regulatory agencies, including the Securities and Exchange Commission ("SEC"), may require, which could result in an impact on earnings; changes in tax laws, regulations and existing standards and the resolution of disputes with any taxing jurisdictions; the possibility that the reset process under our trademark license with Deutsche Telekom AG results in changes to the royalty rates for our trademarks; and other risks described in our filings with the SEC. You should not place undue reliance on these forward-looking statements. We do not undertake to update forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.

This Press Release includes non-GAAP financial measures. The non-GAAP financial measures should be considered in addition to, but not as a substitute for, the information provided in accordance with GAAP. Reconciliations for the non-GAAP financial measures to the most directly comparable GAAP financial measures are provided below. T-Mobile is not able to forecast net income on a forward-looking basis without unreasonable efforts due to the high variability and difficulty in predicting certain items that affect GAAP net income including, but not limited to, income tax expense, stock-based compensation expense and interest expense. Adjusted EBITDA should not be used to predict net income as the difference between the two measures is variable.

Adjusted EBITDA - Earnings before Interest expense, net of Interest income, Income tax expense, depreciation and amortization expense, non-cash stock-based compensation and certain expenses not reflective of T-Mobile's ongoing operating performance. Adjusted EBITDA margin represents Adjusted EBITDA divided by service revenues. Adjusted EBITDA is a non-GAAP financial measure utilized by T-Mobile's management to monitor the financial performance of our operations. T-Mobile uses Adjusted EBITDA internally as a metric to evaluate and compensate its personnel and management for their performance, and as a benchmark to evaluate T-Mobile's operating performance in comparison to its 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 companies because it is indicative of T-Mobile's 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, network decommissioning costs and costs related to the proposed Sprint transaction, as they are not indicative of T-Mobile's 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").

Free Cash Flow - Net cash provided by operating activities less cash purchases of property and equipment, including proceeds related to beneficial interests in securitization transactions and less cash payments for debt prepayment of debt extinguishment costs. Free Cash Flow is utilized by T-Mobile's management, investors, and analysts to evaluate cash available to pay debt and provide further investment in the business.

Average Billings per User (ABPU) - Average monthly branded postpaid service revenues earned from customers plus monthly equipment installment plan (EIP) billings and lease revenues divided by the average branded postpaid customers during the period, further divided by the number of months in the period. T-Mobile believes branded postpaid ABPU is indicative of estimated cash collections, including device financing payments, from T-Mobile's postpaid customers each month.