8-K: T-Mobile Posts Strong Q4, Full-Year 2025 Results

T-Mobile US, Inc. announced industry-leading customer growth and robust financial performance for Q4 and full year 2025, driven by network differentiation.

Summary

• Total postpaid net customer additions reached 2.4 million in Q4 2025 and 7.8 million for the full year 2025, both industry bests.
• Postpaid phone net customer additions were 962 thousand in Q4 2025 and 3.3 million for the full year 2025, also industry bests.
• Total broadband net customer additions amounted to 558 thousand in Q4 2025 and 2.0 million for the full year 2025, including fiber customer additions from acquisitions.
• Service revenues increased 10% year-over-year to $18.7 billion in Q4 2025 and 8% year-over-year to $71.3 billion for the full year 2025.
• Net income was $2.1 billion in Q4 2025 and $11.0 billion for the full year 2025, impacted by $293 million (net of tax) in severance costs and $208 million (net of tax) in impairment expense.
• Diluted earnings per share (EPS) was $1.88 in Q4 2025 and $9.72 for the full year 2025.
• Core Adjusted EBITDA grew 7% year-over-year to $8.4 billion in Q4 2025 and 7% year-over-year to $33.9 billion for the full year 2025.
• Adjusted Free Cash Flow increased 2% year-over-year to $4.2 billion in Q4 2025 and 6% year-over-year to $18.0 billion for the full year 2025.
• T-Mobile returned $14.0 billion to stockholders in 2025 through share repurchases and cash dividends, with a cumulative $45.4 billion returned since Q3 2022.

Sentiment

Score: 7

Explanation: StockSavvy.ai views this as a strong operational performance with significant customer growth and network leadership, partially offset by a decline in net income due to one-time restructuring costs. The positive outlook for 2026 reinforces confidence in future profitability.

Positives

• Achieved industry-leading customer growth with 2.4 million total postpaid net additions in Q4 2025 and 7.8 million for the full year 2025.
• Reported industry-best postpaid phone net customer additions of 962 thousand in Q4 2025 and 3.3 million for the full year 2025.
• Delivered strong service revenue growth of 10% year-over-year in Q4 2025 ($18.7 billion) and 8% for the full year 2025 ($71.3 billion).
• Core Adjusted EBITDA increased 7% year-over-year to $8.4 billion in Q4 2025 and $33.9 billion for the full year 2025.
• Adjusted Free Cash Flow grew 2% year-over-year to $4.2 billion in Q4 2025 and 6% to $18.0 billion for the full year 2025.
• For the first time ever, customers rated T-Mobile highest for network quality in five of six regions in the J.D. Power 2026 U.S. Wireless Network Quality Study.
• Won all five overall network experience categories from Opensignal, along with 5G Coverage Experience and 5G Availability.
• Recognized as the Best Mobile Network in the U.S. by Ookla's latest Speedtest Connectivity report.
• Announced a stockholder return program for up to $14.6 billion through December 2026, following $14.0 billion in returns in 2025.

Negatives

• Net income decreased by 29.5% year-over-year in Q4 2025 to $2.1 billion and by 3.1% for the full year 2025 to $11.0 billion.
• Diluted EPS decreased by 26.8% year-over-year in Q4 2025 to $1.88.
• The decline in net income and diluted EPS was primarily due to $293 million (net of tax) in severance and related costs from the 2025 workforce transformation and reinvestment initiative, and $208 million (net of tax) in impairment expense in 2025.
• Core Adjusted EBITDA decreased 2.7% sequentially in Q4 2025.
• Adjusted Free Cash Flow decreased 13.1% sequentially in Q4 2025.
• Postpaid phone churn increased to 1.02% in Q4 2025 (from 0.92% in Q4 2024) and 0.93% in 2025 (from 0.86% in 2024), attributed to higher industry switching.

Risks

• Competition, industry consolidation, and changes in the market for wireless communications services and other forms of connectivity.
• Cyberattacks, disruptions, data loss, or other security breaches.
• Inability to adopt and deploy network technologies in a timely and effective manner.
• Inability to effectively execute digital transformation and drive customer and employee adoption of emerging technologies.
• Inability to retain or motivate key personnel, hire qualified personnel, or maintain corporate culture.
• System failures and business disruptions, allowing for unauthorized use of or interference with the network and other systems.
• The scarcity and cost of additional wireless spectrum, and regulations relating to spectrum use.
• The timing and effects of any pending and future acquisition, investment, joint venture, merger or divestiture, including inability to obtain regulatory approval or achieve expected benefits.
• Adverse economic, political, or market conditions in the U.S. and international markets, including inflation, interest rates, tariffs, supply chain disruptions, and geopolitical instability.
• Potential operational delays, higher procurement and operational costs, and increased regulatory and compliance complexities due to changes to trade policies.
• Inability to successfully deliver new products and services.
• Any disruption or failure of third parties (including key suppliers) to provide products or services.
• Sociopolitical volatility and polarization and risks related to environmental, social and governance matters.
• Substantial level of indebtedness and inability to service debt obligations in accordance with their terms.
• Changes in credit market conditions, credit rating downgrades, or an inability to access debt markets.
• Inability to maintain effective internal control over financial reporting.
• Compliance with the current regulatory framework, including national security obligations, and any changes in regulations.
• Laws and regulations relating to the handling of privacy, data protection, and artificial intelligence.
• Unfavorable outcomes of and increased costs from existing or future regulatory or legal proceedings.
• Difficulties in protecting intellectual property rights or infringement on the intellectual property rights of others.
• Offering of regulated financial services products and exposure to a wide variety of state and federal regulations.
• New or amended tax laws or regulations or administrative interpretations and judicial decisions affecting the scope or application of tax laws or regulations.
• Wireless licenses, including those controlled through leasing agreements, are subject to renewal and may be revoked.
• Exclusive forum provision as provided in the Certificate of Incorporation.
• Interests of Deutsche Telekom AG (DT), the controlling stockholder, which may differ from the interests of other stockholders.
• Current and future stockholder return programs may not be fully utilized, and share repurchases and dividend payments may fail to have the desired impact on stockholder value.
• Future sales of common stock by DT and SoftBank Group Corp. and inability to attract additional equity financing outside the United States due to foreign ownership limitations by the Federal Communications Commission.

Future Outlook

T-Mobile provided strong guidance for 2026, expecting postpaid net account additions between 900 thousand and 1.0 million. Core Adjusted EBITDA is projected to be between $37.0 billion and $37.5 billion, representing a 10% year-over-year increase at the midpoint. Net cash provided by operating activities is anticipated to be between $28.0 billion and $28.7 billion, with cash purchases of property and equipment around $10.0 billion. Adjusted Free Cash Flow is forecast to be between $18.0 billion and $18.7 billion. The company will also update its multi-year guidance through 2027 at an upcoming Capital Markets Day Update event.

Management Comments

• "Q4 was a great proof point of our winning formula and we see significant runway ahead to widen our margin of differentiation, including through maintaining our tremendous momentum in network perception gains and in our digital transformation and simplification."
• "In 2025, more new postpaid customers chose the Un-carrier than ever before, driven by outstanding momentum across all categories."
• "As we look to 2026, we're even more confident that the future is brighter than ever before. We see continued opportunity to eliminate customer pain points, introduce even more consumers to the Un-carrier ethos, and further extend our network leadership while accelerating our digital transformation to drive durable and outsized profitable growth."

Industry Context

StockSavvy.ai notes T-Mobile's continued market share gains and network leadership, evidenced by multiple industry awards (J.D. Power, Opensignal, Ookla), position it strongly against competitors like AT&T and Verizon. The focus on 5G broadband and customer experience aligns with broader industry trends of expanding connectivity and value-added services. The acquisitions of UScellular, Metronet, and Lumos further consolidate its market position and expand its fiber and 5G broadband footprint, indicating a strategic move to diversify and strengthen its core offerings in a competitive landscape.

Comparison to Industry Standards

• T-Mobile achieved the first-ever J.D. Power award for highest network quality in five of six U.S. regions, ending a 35-consecutive-report lead by a competitor, significantly surpassing its previous high of two regions.
• Won all five overall network experience categories from Opensignal, along with 5G Coverage Experience and 5G Availability, demonstrating superior performance compared to rivals in network consistency and reliability.
• Recognized as the Best Mobile Network in the U.S. by Ookla's latest Speedtest Connectivity report, following an initial win in July 2025, outperforming other major carriers in speed and experience.
• Industry-leading customer growth metrics (postpaid net additions, postpaid phone net additions, total broadband net additions) indicate outperformance against major competitors like AT&T and Verizon, based on consensus expectations.

Legal Proceedings

• The filing mentions 'unfavorable outcomes of and increased costs from existing or future regulatory or legal proceedings' as a risk factor.
• Legal-related expenses (recoveries), net, consists of the settlement of certain litigation and compliance costs associated with the August 2021 cyberattack, net of insurance recoveries, which impacted financial results as a special item.

Stakeholder Impact

• Shareholders: Positive impact from ongoing stockholder return program ($14.0 billion in 2025, $14.6 billion authorized through Dec 2026), but net income decline might be a concern.
• Customers: Positive impact from 'best-in-class customer results,' widening network differentiation, and new services like real-time translation.
• Employees: Impacted by the 2025 workforce transformation and reinvestment initiative (severance costs).
• Creditors: Company has a 'substantial level of indebtedness' which is a risk, but strong cash flow generation helps service debt.

Next Steps

• Upcoming Capital Markets Day Update event to provide an update to multi-year guidance through 2027.
• Expanded format earnings call and 2024 Capital Markets Day halftime check-in.
• Next dividend payable on March 12, 2026.
• Continued digital transformation and simplification efforts.
• Further extension of network leadership.

Key Dates

Recommendation

While T-Mobile demonstrates exceptional operational strength, customer acquisition, and network superiority, the year-over-year decline in net income and diluted EPS, even with explanations of one-time costs, warrants a cautious 'hold' recommendation. The strong 2026 guidance and ongoing shareholder returns are positive, but investors should monitor the impact of integration costs and churn trends.

Keywords

T-Mobile, TMUS, Q4 2025, Full Year 2025, Financial Results, Earnings, Wireless, 5G, Postpaid, Broadband, Customer Growth, Network Quality, J.D. Power, Opensignal, Ookla, Service Revenue, EBITDA, Free Cash Flow, Share Repurchase, Dividends, UScellular Acquisition