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⚠ Verizon and AT&T Can Buy a Network TooModerate threat

T-Mobile US (TMUS) — threat to the moat

Verizon and AT&T are as large as T-Mobile and spend as much; the network lead is six years old.

T-Mobile's network lead is new and its rivals are large. Verizon was worth $190.79 billion and AT&T $166.51 billion in October 2026, against T-Mobile's $176.60 billion1. Both hold national spectrum, and the 10-K names them first among its competitors2.

US carrier market value, October 2026 ($bn)190.79Verizon176.60T-Mobile166.51AT&Tstockanalysis.com market capitalisation, October 2026
Three companies of about the same size.

The lead also depends on a mid-band head start that rivals are working to close. T-Mobile's 2.5 GHz position came with Sprint in 20203; six years is a long head start, but not a permanent one.

Comparisons with rivals have become harder to make. Verizon reported 184,000 postpaid phone net additions and AT&T 432,000 in the June 2026 quarter45, while T-Mobile no longer reports phone additions at all6. If a rival's network spending began to take phone customers, T-Mobile's own disclosures would not show it directly.

T-Mobile's own capital spending sets the bar rivals would have to clear. It spent $11,034 million in 2020, $12,326 million in 2021 and $13,970 million in 202278 to build its 5G lead. Matching that would cost a rival several years of similar budgets.

There is a sign that the market is already competing harder. AT&T added 432,000 postpaid phones in the June 2026 quarter with churn of 0.86%9, a better churn figure than T-Mobile's account churn of 0.99%10, though the bases differ. If T-Mobile's postpaid revenue growth fell to within three points of AT&T's wireless service growth, the network advantage would no longer be visible in the numbers.

References
  1. Third-party estimateVerizon was worth $190.79 billion and AT&T $166.51 billion in October 2026, against T-Mobile's $176.60 billion.
    stockanalysis.com, market capitalisation history: T-Mobile US year-end values $31.92bn (2015), $47.39bn, $52.84bn, $53.97bn, $67.09bn, $167.37bn, $144.87bn, $174.18bn, $185.42bn, $256.15bn, $227.10bn (2025); Verizon $190.79bn and AT&T $166.51bn in October 2026. — 2015-2026 · publ. October 2026 · source ↗
  2. ReportedBoth hold national spectrum, and the 10-K names them first among its competitors.
    T-Mobile US, Inc. Form 10-K for fiscal 2025 (year ended 31 December 2025) - spectrum: holdings by band, licence transactions and the spectrum roll-forward. — FY2025 · publ. 11 February 2026 · source ↗
  3. ReportedT-Mobile's 2.5 GHz position came with Sprint in 2020; six years is a long head start, but not a permanent one.
    T-Mobile US, Inc. Form 10-K for fiscal 2020 - the Sprint merger closed 1 April 2020 for $40.8 billion of consideration, 2018-2020 revenue lines recast, selected financial data 2016-2020 (spectrum, assets, equity, customers) and Deutsche Telekom's 43.4% ownership with 52.3% voting control. — FY2020 · publ. February 2021 · source ↗
  4. ReportedVerizon reported 184,000 postpaid phone net additions and AT&T 432,000 in the June 2026 quarter, while T-Mobile no longer reports phone additions at all.
    Verizon Communications second-quarter 2026 results, Form 8-K exhibit 99 - 184,000 postpaid phone net additions, retail postpaid accounts of 34,237 thousand and ARPA of $168.35. — Q2 2026 · publ. July 2026 · source ↗
  5. ReportedVerizon reported 184,000 postpaid phone net additions and AT&T 432,000 in the June 2026 quarter, while T-Mobile no longer reports phone additions at all.
    AT&T second-quarter 2026 results, Form 8-K exhibit 99.1 - 432,000 postpaid phone net additions, postpaid phone churn of 0.86% and wireless service revenues of $17,413 million, up 3.3%. — Q2 2026 · publ. July 2026 · source ↗
  6. ReportedVerizon reported 184,000 postpaid phone net additions and AT&T 432,000 in the June 2026 quarter, while T-Mobile no longer reports phone additions at all.
    T-Mobile US, Inc. Form 10-K for fiscal 2025 (year ended 31 December 2025) - MD&A performance measures: customers, net additions, churn, ARPA and ARPU, and employees. — FY2025 · publ. 11 February 2026 · source ↗
  7. ReportedIt spent $11,034 million in 2020, $12,326 million in 2021 and $13,970 million in 2022 to build its 5G lead.
    T-Mobile US, Inc. Form 10-K for fiscal 2020 - the Sprint merger closed 1 April 2020 for $40.8 billion of consideration, 2018-2020 revenue lines recast, selected financial data 2016-2020 (spectrum, assets, equity, customers) and Deutsche Telekom's 43.4% ownership with 52.3% voting control. — FY2020 · publ. February 2021 · source ↗
  8. ReportedIt spent $11,034 million in 2020, $12,326 million in 2021 and $13,970 million in 2022 to build its 5G lead.
    T-Mobile US, Inc. Form 10-K for fiscal 2023 - the first cash dividend of $0.65 a share paid on 15 December 2023, Sprint merger-related costs, 2022 income statement and Deutsche Telekom's 50.7% ownership. — FY2023 · publ. February 2024 · source ↗
  9. ReportedAT&T added 432,000 postpaid phones in the June 2026 quarter with churn of 0.86%, a better churn figure than T-Mobile's account churn of 0.99%, though the bases differ.
    AT&T second-quarter 2026 results, Form 8-K exhibit 99.1 - 432,000 postpaid phone net additions, postpaid phone churn of 0.86% and wireless service revenues of $17,413 million, up 3.3%. — Q2 2026 · publ. July 2026 · source ↗
  10. ReportedAT&T added 432,000 postpaid phones in the June 2026 quarter with churn of 0.86%, a better churn figure than T-Mobile's account churn of 0.99%, though the bases differ.
    T-Mobile US Investor Factbook for Q2 2026, Form 8-K exhibit 99.2 - quarterly revenue lines, postpaid accounts, churn, ARPA and its drivers, upgrade rate, bad debt, margins, balance sheet and leverage ratios - postpaid accounts, account churn, ARPA and its drivers, and the upgrade rate. — Q2 2026 · publ. 23 July 2026 · source ↗
Sources
Generated October 6, 2026