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CompetitorsNarrow moat

T-Mobile US (TMUS) — moat facet

T-Mobile's four competitive relationships are all different: equal incumbents, cable rivals that sell it spectrum, a former wholesale customer, and a satellite venture with both incumbents.

T-Mobile's competition is not one fight but four different relationships. The 10-K names "traditional Mobile Network Operators" such as AT&T and Verizon first, then smaller and regional providers including "Charter Communications, Inc., Comcast Corporation, EchoStar Corporation"1. What makes them interesting is how each one relates to T-Mobile.

T-Mobile rivals, one figure eachVerizon / AT&T: market share, end-2024 (incumbents)34% / 27%Comcast: 600 MHz sold to T-Mobile, maximum (rival and seller)$3,400MWholesale and other revenue, 2022 to 2025 (EchoStar and MVNOs)$5,547M to $2,877MCarriers in the 2026 satellite venture (partners)3T-Mobile US Form 10-K FY2022 and FY2025; TeleGeography; Verizon release, October 2026
Four rivals, four kinds of relationship.

Verizon and AT&T are equal-sized incumbents. TeleGeography put the three national carriers at 35%, 34% and 27% of the market at the end of 20242, and their market values are within about 15% of one another34. Comcast and the cable companies compete for wireless customers and sell T-Mobile spectrum. EchoStar used to rent T-Mobile's network and now competes with it. And on satellite coverage, T-Mobile has formed a joint venture with both of its large rivals5.

The pattern says something about the moat. In a three-carrier market the rivals are too large to drive out and too interdependent to fight to the death. They buy and sell spectrum from one another, share coverage costs, and compete on network quality and price, where T-Mobile currently leads on growth.

The Verizon page on T-Mobile covers the account crossover from Verizon's side; the pages here cover what each relationship means for T-Mobile.

The 10-K also looks beyond carriers. Competitors "also include providers who offer similar communication services, such as voice, messaging and data services, using alternative technologies"6. The filing names none of them, and they compete for the services rather than for the network that carries them.

T-Mobile's growth lead is the measure of where it stands. TeleGeography's estimate gave T-Mobile 35% of the market at the end of 2024; a lower share in the next estimate would mean the incumbents and cable had begun to take back what T-Mobile won after Sprint.

Moat trajectory: Holding steady

Market share 35% at end-2024; growth lead intact.

The number that tests this moat
Third-party estimate
US wireless market share (TeleGeography estimate)
35% (end-2024), against Verizon 34% and AT&T 27%

T-Mobile's position among the three; a lower share in the next estimate would mean rivals are taking back ground.

Source: TeleGeography mobile market summary ↗
Dig deeper
DIG DEEPER 01
Verizon and AT&T: The Incumbents It Caught
T-Mobile has 463 thousand more postpaid accounts than Verizon at about $15 less per account, and its postpaid revenue is growing four times as fast as…
DIG DEEPER 02
Comcast and Charter: Rivals Who Sell It Spectrum
Comcast competes with T-Mobile for wireless customers and is selling it 600 MHz spectrum for up to $3.4 billion.
DIG DEEPER 03
EchoStar: The Customer Turned Competitor
EchoStar went from renting T-Mobile's network to competing with it; T-Mobile's wholesale revenue fell 48% from 2022 and prepaid fell 6.4% in Q2 2026.
DIG DEEPER 04
Satellite: A Venture With Both Rivals
T-Mobile joined AT&T and Verizon in a satellite joint venture to end dead zones, turning coverage at the edges into a shared cost.
References
  1. ReportedThe 10-K names "traditional Mobile Network Operators" such as AT&T and Verizon first, then smaller and regional providers including "Charter Communications, Inc., Comcast Corporation, EchoStar Corporation".
    T-Mobile US, Inc. Form 10-K for fiscal 2025 (year ended 31 December 2025) - Item 1 business, the single Wireless segment, competition and the revenue lines with their drivers. — FY2025 · publ. 11 February 2026 · source ↗
  2. Third-party estimateTeleGeography put the three national carriers at 35%, 34% and 27% of the market at the end of 2024, and their market values are within about 15% of one another.
    TeleGeography, 2025 mobile market summary - US mobile market shares at 31 December 2024: T-Mobile 35%, Verizon Wireless 34%, AT&T 27%. — December 2024 · publ. 2025 · source ↗
  3. Third-party estimateTeleGeography put the three national carriers at 35%, 34% and 27% of the market at the end of 2024, and their market values are within about 15% of one another.
    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 $166.51bn in October 2026. — 2015-2026 · publ. October 2026 · source ↗
  4. Moat Explorer calcTeleGeography put the three national carriers at 35%, 34% and 27% of the market at the end of 2024, and their market values are within about 15% of one another.
    Moat Explorer calculation from T-Mobile US reported figures ($ millions unless stated; calendar years). Revenue lines: FY2025 shares of total revenues 88,309: postpaid 57,932 = 65.6%, prepaid 10,497 = 11.9%, wholesale and other service 2,877 = 3.3%, equipment 15,972 = 18.1%, other 1,031 = 1.2%. Postpaid share of total revenues 2018 20,862 / 43,310 = 48.2%. Service revenues = postpaid + prepaid + wholesale and other service: 2018 32,441, 2020 50,395, 2022 61,323, 2025 71,306; postpaid share of service revenues 2018 64.3%, 2020 72.0%, 2022 74.9%, 2025 57,932 / 71,306 = 81.2%; Q2 2026 15,853 / 18,983 = 83.5%. Postpaid growth 2025 57,932 / 52,340 - 1 = +10.7%; 2021-2025 (57,932 / 42,562)^(1/4) - 1 = 8.0% a year. Wholesale and other service 2,877 / 5,547 - 1 = -48.1% (2022 to 2025). Prepaid ARPU 34.14 / 37.92 - 1 = -10.0% (2023 to 2025). Equipment revenues less cost of equipment sales 15,972 - 21,277 = -5,305 (2025), 14,263 - 18,882 = -4,619 (2024), 14,138 - 18,533 = -4,395 (2023); loss over service revenues 5,305 / 71,306 = 7.4% (2025), 4,395 / 63,241 = 6.9% (2023); equipment share of revenue 2021 20,727 / 80,118 = 25.9%; cost of equipment sales growth 21,277 / 18,882 - 1 = +12.7%. Revenue growth 2025 88,309 / 81,400 - 1 = +8.5%; operating income growth 18,279 / 18,010 - 1 = +1.5%. Q2 2026 against Q2 2025: total revenues 22,791 / 21,132 - 1 = +7.9%; service revenues 18,983 / 17,438 - 1 = +8.9%; postpaid 15,853 / 14,078 - 1 = +12.6%; prepaid 2,473 / 2,643 - 1 = -6.4%; wholesale and other service 657 / 717 - 1 = -8.4%; equipment 3,524 / 3,439 - 1 = +2.5%; operating income 5,490 / 5,213 - 1 = +5.3%; net income 3,239 / 3,222 - 1 = +0.5%; Core Adjusted EBITDA 9,537 / 8,541 - 1 = +11.7%. T-Mobile postpaid revenue growth +12.6% against AT&T wireless service revenue growth +3.3%. Capital expenditure 9,955 / 13,970 - 1 = -28.7% (2022 to 2025); as a share of revenue 9,955 / 88,309 = 11.3% (2025), 13,970 / 79,571 = 17.6% (2022). Customers and accounts: low- and mid-band spectrum 394 - 357 = 37 MHz added (2021 to 2025); 2.5 GHz share 185 / 394 = 47.0%. Auction 108 cost 304 / Channel 51 purchase 3,500 = 8.7%, less than a tenth. Monthly churn times twelve: 1.58% x 12 = 19.0% a year (about a fifth), 0.86% x 12 = 10.3% (about a tenth). Postpaid accounts 34,700 / 31,502 - 1 = +10.2%; accounts acquired 1,448 (UScellular) + 633 (Metronet and other) + 85 (Lumos) = 2,166; excluding them (34,700 - 2,166) / 31,502 - 1 = +3.3%. Postpaid phone customers 85,594 - 79,013 = 6,581 added in 2025, of which 3,287 from UScellular = 49.9%, about half; organic 6,581 - 3,287 = 3,294. Postpaid account lead over Verizon 34,700 - 34,237 = 463 thousand; Verizon ARPA 168.35 / 152.91 - 1 = +10.1%, a difference of $15.44. ARPA growth 152.91 / 149.87 - 1 = +2.0% (Q2 2026); 143.85 / 139.27 - 1 = +3.3% (2024); 148.97 / 143.85 - 1 = +3.6% (2025); 2018-2025 (148.97 / 128.86)^(1/7) - 1 = 2.1% a year. Customers per employee 142,388,000 / 75,000 = 1,899. 5G broadband to target 15,000 - 8,450 = 6,550 thousand over five years = 1,310 thousand a year; other broadband 9,447 - 8,450 = 997 thousand. Capital and valuation: spectrum licences over total assets 98,032 / 219,237 = 44.7% (2025), 98,178 / 213,553 = 46.0% (30 June 2026). Spectrum step-up in the Sprint year 82,828 - 36,465 = 46,363. Sprint merger-related costs 1,915 + 3,107 + 4,969 + 1,034 = 11,025, about $11.0 billion; 2020-2022 1,915 + 3,107 + 4,969 = 9,991. Lease expense 5,197 / 5,066 - 1 = +2.6%. Net interest expense 3,774 / 3,335 - 1 = +13.2% (2023 to 2025). Employee expenses 8,553 / 7,041 - 1 = +21.5%. Bad debt expense 1,370 / 898 - 1 = +52.6%. Core Adjusted EBITDA over service revenues 29,116 / 63,241 = 46.0% (2023), 31,771 / 66,178 = 48.0% (2024), 33,924 / 71,306 = 47.6% (2025). Digital and AI target 3,000 / 33,924 = 8.8% of 2025 Core Adjusted EBITDA. Shareholder returns 2025 14,000 / Adjusted Free Cash Flow 17,995 = 77.8%; cumulative returns 54.6bn / market value 176.60bn = 30.9%; 2026 program 18.2bn / 176.60bn = 10.3%; trailing free cash flow 18.40bn / 176.60bn = 10.4%. Deutsche Telekom stake 54.3% x 176.60bn = 95.9bn. Market value 176.60 / 256.15 - 1 = -31.1% (end-2024 to October 2026). Verizon 190.79bn / AT&T 166.51bn = 1.146. Contracted revenue 2,700 + 1,200 + 938 + 2,200 = 7,038, over revenue 88,309 = 8.0%; wholesale minimums 1,200 + 938 + 2,200 = 4,338. Fiber joint venture commitments 932 + 500 + 4,600 + 700 + 2,000 = 8,732, about $8.7 billion. Further derived figures: ad-technology purchases Vistar 621 + Blis 180 = 801; lease expense over revenue 5,197 / 88,309 = 5.9%; low-band spectrum 600 MHz 43 + 700 MHz 12 + 800 MHz 14 = 69 MHz; total customers added in 2024 129,528 - 119,700 = 9,828, of which Mint 3,504 = 35.7%; SG&A 23,470 / 20,818 - 1 = +12.7%; advertising expense 3,668 / 2,515 - 1 = +45.8%; postpaid other customers 30,851 / 22,116 - 1 = +39.5%; postpaid revenues first half 2026 31,482 / 27,672 - 1 = +13.8%; net income Q1 2026 2,504 / 2,953 - 1 = -15.2%; wholesale and other service share of service revenues 6,074 / 58,369 = 10.4% (2021), 2,877 / 71,306 = 4.0% (2025); Q4 2025 total revenues less service revenues 24,334 - 18,702 = 5,632; postpaid RPO over postpaid revenues 2,700 / 57,932 = 4.7%; fiber customers acquired 755 + 97 = 852 thousand, against a 3,000-4,000 thousand target, 2,148-3,148 thousand to go; first half 2026 service revenues 37,814 / 34,363 - 1 = +10.0%, net income 5,743 / 6,175 - 1 = -7.0%, Core Adjusted EBITDA 18,777 / 16,799 - 1 = +11.8%; postpaid phone ARPU 50.37 / 49.35 - 1 = +2.1% (2025); prepaid churn over postpaid phone churn 2.72 / 0.93 = 2.9 times; Verizon total revenues 34,253 / 34,504 - 1 = -0.7%; Lumos 932,000,000 / 97,000 customers = about $9,608 (about 9,600) a customer; postpaid accounts Q3 2025 33,979 - 31,502 = 2,477; equipment revenues first half 2026 7,520 / 7,143 - 1 = +5.3%; three carriers 35 + 34 + 27 = 96%; bad debt and receivable losses 1.8% x 22,791 = about 410 (Q2 2026); prepaid customers 25,943 - 25,410 = 533, of which UScellular 349; depreciation and amortization less capital spending 13,508 - 9,955 = 3,553 (2025); employee expenses per employee 8,553,000,000 / 75,000 = about $114,000 (2025), 7,041,000,000 / 70,000 = about $101,000 (2024); deal values Ka-ena up to 1,350 + UScellular 4,400 + Metronet 4,600 = 10,350, about $10.4 billion; Metronet and other 633 + Lumos 85 = 718; net income over total revenues 2,103 / 24,334 = 8.6% (Q4 2025), 3,222 / 21,132 = 15.2% (Q2 2025); ARPA 152.91 / 148.97 - 1 = +2.6%; lease expense 5,066 / 5,398 - 1 = -6.2% (2024); total customers added 2024 129,528 - 119,700 = 9,828; UScellular merger costs net of tax first half 2026 476 + 146 = 622; return on equity 10,992 / ((59,203 + 61,741) / 2 = 60,472) = 18.2% (2025), 11,339 / ((61,741 + 64,715) / 2 = 63,228) = 17.9% (2024); wholesale and other service share of service revenues 1,981 / 32,441 = 6.1% (2018), 4,782 / 63,241 = 7.6% (2023); wholesale 1,183 + roaming and other service 798 = 1,981 (2018), 1,279 + 1,005 = 2,284 (2019), as recast in the FY2020 10-K; year-end P/E about 20.7 (2025) and 22.6 (2024); customers added 2020 to 2025 142,388 - 102,064 = 40,324 thousand, about 40 million. Trailing twelve months to June 2026: revenue 88,309 - 42,018 + 45,898 = 92,189; net income 10,992 - 6,175 + 5,743 = 10,560. Year-end market value (stockanalysis.com) over net income and total revenues: 2015 31.92bn / 733 = 43.55, / 32,467 = 0.983; 2016 47.39 / 1,460 = 32.46, / 37,490 = 1.264; 2017 52.84 / 4,536 = 11.65, / 40,604 = 1.301; 2018 53.97 / 2,888 = 18.69, / 43,310 = 1.246; 2019 67.09 / 3,468 = 19.35, / 44,998 = 1.491; 2020 167.37 / 3,064 = 54.62, / 68,397 = 2.447; 2021 144.87 / 3,024 = 47.91, / 80,118 = 1.808; 2022 174.18 / 2,590 = 67.25, / 79,571 = 2.189; 2023 185.42 / 8,317 = 22.29, / 78,558 = 2.360; 2024 256.15 / 11,339 = 22.59, / 81,400 = 3.147; 2025 227.10 / 10,992 = 20.66, / 88,309 = 2.572; October 2026 176.60 / 10,560 = 16.72, / 92,189 = 1.916 - capital: spectrum, costs, margins, shareholder returns, debt, commitments and valuation. — FY2015-Q2 2026 · publ. October 2026 · source ↗
    Method: Arithmetic on figures reported in T-Mobile US Forms 10-K, 10-Q, earnings releases and the Investor Factbook, Verizon and AT&T Q2 2026 releases, and stockanalysis.com market values; each operand is stated in the source line.
  5. ReportedAnd on satellite coverage, T-Mobile has formed a joint venture with both of its large rivals.
    Verizon news release, 1 October 2026 - AT&T, T-Mobile and Verizon launch a joint venture to help end coverage dead zones with satellite connectivity; Paul Roth interim CEO. — October 2026 · publ. 1 October 2026 · source ↗
  6. ReportedCompetitors "also include providers who offer similar communication services, such as voice, messaging and data services, using alternative technologies".
    T-Mobile US, Inc. Form 10-K for fiscal 2025 (year ended 31 December 2025) - Item 1 business, the single Wireless segment, competition and the revenue lines with their drivers. — FY2025 · publ. 11 February 2026 · source ↗
Sources
Generated October 6, 2026