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    TMUS
    Earnings call· Sep 2025(Q3 FY25)

    T-Mobile US, Inc. TMUS

    Oct 23, 2025 Source

    Executive summary

    T-Mobile Q3 FY25 — Record Postpaid Growth and Widening Network Differentiation

    T-Mobile delivered another quarter of exceptional growth, driven by record postpaid net additions and widening network differentiation, which is translating into strong financial performance. The company is leveraging its network leadership and digital transformation initiatives to sustain momentum, while strategically integrating recent acquisitions and fiber JVs to expand its broadband footprint. Management expressed high confidence in future growth, planning to increase FY26 and FY27 guidance.

    Highlights

    5

    • Achieved best-ever total postpaid net additions and over 1 million postpaid phone net additions, marking the best Q3 in over a decade.

    • Led the industry in postpaid phone churn, demonstrating strong customer retention.

    • Postpaid ARPA grew by 3.8% organically, excluding UScellular and fiber JV impacts, with full-year ARPA growth expected at approximately 4%.

    • Led the industry with over 500,000 5G broadband customer additions and over 50,000 fiber customer additions.

    • Delivered industry-leading financial growth with postpaid service revenue up 12% YoY, total service revenue up 9%, and core adjusted EBITDA up 6%.

    Concerns

    2

    • Expects to incur approximately $300 million in costs to achieve UScellular integration synergies in Q4 FY25.

    • Anticipates approximately $160 million in additional expenses related to cell site decommissioning in Q4 FY25.

    Guidance & targets

    10
    CategoryTargetConfidence
    Total postpaid net additions
    7.2 million to 7.4 million
    high materiality
    High
    Postpaid phone net additions
    3.3 million
    high materiality
    High
    Fiber customer net additions
    approximately 130,000
    medium materiality
    High
    Postpaid ARPA growth (including dilutive impacts)
    at least 3.5%
    high materiality
    High
    Postpaid ARPA growth (excluding dilutive impacts)
    approximately 4%
    high materiality
    High
    Core adjusted EBITDA
    $33.7 billion and $33.9 billion
    high materiality
    High
    UScellular synergy run rate
    $1.2 billion
    high materiality
    High
    Cash CapEx
    approximately $10 billion
    high materiality
    High
    Adjusted free cash flow
    $17.8 billion to $18 billion
    high materiality
    High
    FY26 and FY27 guidance
    Increased guidance
    high materiality
    High

    Operational metrics

    23
    Postpaid ARPA growth (organic)
    3.8%YoY
    Q3 FY25

    Postpaid ARPA growth on an organic basis.

    5G broadband customer additions
    Over 500,000
    Q3 FY25

    Led the industry in 5G broadband customer additions.

    Fiber customer additions
    Over 50,000
    Q3 FY25

    Includes contribution from Metronet following close on July 24.

    Postpaid service revenue growth
    12%YoY
    Q3 FY25

    Industry-leading postpaid service revenue growth.

    Total service revenue growth
    9%YoY
    Q3 FY25

    Overall service revenue growth.

    Core adjusted EBITDA growth
    6%
    Q3 FY25

    Core adjusted EBITDA growth for the quarter.

    Service revenue to free cash flow conversion
    26%
    Q3 FY25

    Another incredible quarter of cash conversion.

    Network perception among switchers
    All-time high
    Q3 FY25

    A big driver to the outperformance seen in Q3.

    Ookla median download speeds (new iPhone)
    Nearly 90% faster
    Q3 FY25

    Ookla data shows T-Mobile's median download speeds on the new iPhone.

    Ookla median download speeds (new iPhone)
    Over 40% faster
    Q3 FY25

    Ookla data shows T-Mobile's median download speeds on the new iPhone.

    5G broadband customer base growth
    Nearly doubled
    Last 2 years

    Using the fallow capacity model, the customer base has nearly doubled.

    5G broadband usage per customer
    580 gigabytesUp 30%
    Q3 FY25

    Average usage per 5G broadband customer.

    5G broadband average download speeds
    Increased by nearly 50%
    Q3 FY25

    Average download speeds for 5G broadband customers.

    iPhone upgrades (digital)
    3 out of 4 (75%)
    Q3 FY25

    Percentage of iPhone upgrades during the preorder window that were digital.

    T-Life app installs
    Over 85 million
    Q3 FY25

    T-Life continues to be the center of digital engagement.

    UScellular integration costs to achieve
    Approximately $300 million
    Q4 FY25

    Expected costs primarily driven by merger-related costs related to UScellular, excluded from core adjusted EBITDA.

    Cell site decommissioning expenses
    Approximately $160 million
    Q4 FY25

    Additional expenses related to cell site decommissioning, excluded from core adjusted EBITDA.

    Q4 FY25 depreciation and amortization expense
    Approximately $3.7 billion
    Q4 FY25

    Anticipated depreciation and amortization expense with all M&A and financing incorporated.

    Q4 FY25 interest expense
    $1 billion
    Q4 FY25

    Anticipated interest expense with all M&A and financing incorporated.

    Postpaid ARPU increase (full year)
    Approximately 2%Up from 1.5%
    FY25

    Full-year ARPU increase, reflecting strong customer lifetime values.

    Postpaid accounts net adds
    Nearly 400,000
    Q3 FY25

    Number of postpaid accounts added in Q3.

    Samsung S25 download speeds
    More than 100% faster
    Q3 FY25

    Performance of Samsung S25 on T-Mobile's network compared to a competitor.

    5G rate cap
    —
    Q3 FY25

    New format for Apple Watch, optimized for wearables, running on T-Mobile's 5G advanced network, offering longer battery lives, lower latency, and higher throughputs than LTE watches.

    Industry KPIs

    10
    MetricValueDetails
    Postpaid arpa vs ARPU3.8% (organic ARPA)%
    Free cash flow FCF guidance$17.8 billion to $18 billionUSD
    Service revenue growth rate12% (postpaid); 9% (total)%
    Postpaid switching win shareAll-time high
    Fiber jv cost synergy programsOver 50,000customer additions
    Postpaid net account additionsNearly 400,000accounts
    Share buyback capital returned—
    Postpaid phone vs account churnLed the industry
    Spectrum position network benchmarksMore and better spectrum than anyone else
    Fwa subscriber base and capacity modelOver 500,000customer additions

    Product announcements

    2
    ProductTypeDetails
    5G Advanced Networklaunch
    Apple Watch 5G rate caplaunch

    Deals & partnerships

    5
    UScellularAcquisition of UScellular customers and assets, integration into T-Mobile network and operations.

    Welcomed UScellular customers to the T-Mobile family, providing immediate benefits. Integration is leveraging the T-Mobile playbook from the Sprint merger.

    MetronetFiber network partnership contributing to T-Mobile's fiber customer additions.

    Part of T-Mobile's strategy to pursue capital-light fiber JVs to scale the business and leverage complementary capabilities.

    LumosFiber network partnership contributing to T-Mobile's fiber customer additions.

    Part of T-Mobile's strategy to pursue capital-light fiber JVs to scale the business and leverage complementary capabilities.

    SpaceX (Starlink)Technology alliance to co-invent satellite direct-to-cellular service.

    Working closely with SpaceX to invent flying towers in space to communicate with mobile devices, aiming to end dead zones. Version 2 expected in the next few years with more spectrum.

    OpenAICo-inventing IntentCX, an AI-driven customer experience platform.

    Partnership to transform subscription-based businesses by co-inventing agents for every customer intention, simplifying complicated transactions and creating deeper relationships.

    Risks & headwinds

    3
    UScellular integration costsQ4 FY25

    Approximately $300 million

    Mitigation: These costs are expected to be excluded from core adjusted EBITDA, and the integration is leveraging lessons from the Sprint merger to accelerate synergy realization.

    Cell site decommissioning expensesQ4 FY25

    Approximately $160 million

    Mitigation: These expenses are related to a broader network transformation initiative focused on optimizing customer experience and value, and will be excluded from core adjusted EBITDA.

    Competitive intensity and pricing2025 and beyond

    Industry churn returning to normative rates; ongoing promotional activities

    Mitigation: T-Mobile's widening differentiation (best network, value, experience) allows it to win in competitive environments, especially during periods of increased switching. Customer lifetime values remain resilient due to premium plan adoption and decreasing churn.

    What to watch in Q4 FY25

    5

    UScellular Integration Costs

    Q4 FY25 / FY26
    Current~$300M expected in Q4 FY25
    TargetActual Q4 costs and further timeline for synergy realization

    Why it matters

    Tracking the costs and progress of UScellular integration is crucial for realizing the projected $1.2 billion in synergies and assessing the deal's financial impact.

    As part of that accelerated synergy realization plan, we expect to incur approximately $300 million in costs to achieve in Q4, primarily driven by merger-related costs related to UScellular, which will be excluded from core adjusted EBITDA.

    Q&A highlights

    6

    How will T-Mobile close the network perception gap, and what is the timeline for realizing UScellular synergies?

    Srini explained that network perception is already improving, driving Q3 outperformance, and will be attacked through marketing, digital activation, and local reach. Mike added that maintaining network leadership and large switching quarters also help. Peter detailed that UScellular synergies ($1.2B total OpEx/CapEx run rate) will be mostly realized by the end of FY27, with most costs to achieve ($300M) in Q4 FY25 and FY26.

    “You're going to see us invest in those costs to achieve early on. So I'd expect the vast majority of those to come in 2026 and then achieve the full run rate of those synergies. Remember, it was $950 million of OpEx synergies and $250 million of CapEx synergies, and we'll achieve those inside of 2 years. So as I model it out kind of by the end of '27, you're going to have those full synergies already coming to bear.”

    asked by Benjamin Swinburne · answered by Peter Osvaldik

    2 min read7 chapters

    Detailed Narrative

    01

    CEO Succession and Company Strength

    Mike Sievert reflected on his 50th earnings report, highlighting T-Mobile's transformation from #4 to industry leader. He emphasized the company's current success, exciting future opportunities, and Srini Gopalan's readiness to lead, citing Q3 results as proof. Srini acknowledged Mike's legacy and expressed commitment to widening differentiation through network leadership and digital transformation.

    02

    Broad-Based Customer Growth

    The company achieved all-time best postpaid customer account growth and best-ever total postpaid net additions, including over 1 million postpaid phone net additions, marking the best Q3 in over a decade. This growth was broad-based, occurring across Top 100 markets, smaller markets, and rural areas, with increased postpaid share of households. Postpaid phone churn also led the industry.

    03

    Broadband Expansion and Value Creation

    T-Mobile led the industry with over 500,000 5G broadband customer additions and over 50,000 fiber additions, including contributions from Metronet. Management noted that 5G broadband ARPUs and customer lifetime values are similar to the postpaid phone business, driving significant value creation. The FWA business is seen as sustainable due to the ultra-capacity network and rapid mobile technology evolution.

    04

    Network Leadership and Perception

    Management highlighted a significant opportunity to convert 70 million AT&T and Verizon customers who pay a premium for a network that is no longer superior. T-Mobile hit an all-time high in network perception among switchers in Q3. Ookla data showed T-Mobile's median download speeds on new iPhones were nearly 90% faster than one competitor and over 40% faster than the other, with Samsung S25 speeds over 100% faster. The company is building and upgrading thousands of new cell sites, including in smaller and rural markets, and deploying 5G advanced network capabilities.

    05

    Digital Transformation and AI Integration

    Digital transformation is focused on reducing customer friction. Three out of four iPhone upgrades during the preorder window were digital, demonstrating widening differentiation. T-Life has over 85 million app installs. AI, particularly through the IntentCX partnership with OpenAI, is playing a significant role in simplifying complex transactions like device upgrades, with early elements already impacting results.

    06

    UScellular Integration and Synergies

    The integration of UScellular is progressing rapidly, leveraging lessons from the Sprint merger. Synergy guidance was increased to $1.2 billion in total OpEx and CapEx run rate synergies, with an accelerated timeline to realization within 2 years of close. The company expects to incur approximately $300 million in costs to achieve these synergies in Q4 FY25.

    07

    Capital Allocation and Balance Sheet Strength

    T-Mobile maintains a strong balance sheet and emphasizes thoughtful capital allocation. The company will continue its capital-light strategy for fiber JVs and will rigorously evaluate spectrum acquisitions based on whether it's more cost-effective to buy or densify. Management believes future spectrum supply will increase, allowing for patient and strategic acquisitions to extend its network lead.

    AI-generated summary of the company’s earnings call. Not investment advice.