Yesterday AT&T reported, and today came the turn of its direct competitor - T-Mobile (NASDAQ: TMUS). This is the opportunity we were waiting for: two mobile giants, exactly the same metrics, different strategies - and reading them together teaches more than any single report.
About the Company: The Disruptor That Became the Leader
T-Mobile built itself as an "anti-mobile-company" - it shed binding contracts, simplified plans, and positioned itself as cheap and friendly. After the merger with Sprint it became the leader in the American 5G network, and in recent years it has steadily poached subscribers from AT&T and Verizon. Unlike AT&T, which leans on in-ground optical fiber and a convergence strategy, T-Mobile is betting also on fixed wireless - bringing home internet through the mobile network.
About the Report: Exactly What Was Reported
The bottom line beat. Adjusted EPS of $2.99, up 5% - above the estimate of about $2.61. Service revenue rose 9% to $19.0 billion, and postpaid service revenue jumped 13% to $15.9 billion - both of which the company defines as industry-leading growth.
Profitability strong. Core adjusted EBITDA jumped 12% to $9.5 billion, cash from operations rose 7% to $7.5 billion, and adjusted free cash flow rose 4% to $4.8 billion. Net income, $3.2 billion (+1%), absorbed costs related to the UScellular merger, including accelerated depreciation.
The return to shareholders: $3.3 billion in the quarter ($2.2 billion in buybacks and $1.1 billion in dividends). And the company recorded a record NPS of 46 - the highest ever for one of the big three, per a HarrisX survey.
The Qualifying Point: Account Adds
And here is the number that needs attention. Net postpaid account adds fell 13% to 277 thousand (from 318 thousand a year ago), and churn rose to 0.99% (from 0.92% a year ago, though down from 1.04% in the prior quarter). On the other hand, ARPA - the average revenue per account - rose 2% to $152.91. In other words: fewer new accounts, but each account brings in more.
The Comparison with AT&T: Two Paths to the Same Goal
And here is the value of reading them together. Both companies are operationally strong, but the story differs. AT&T pushed yesterday over a million additions in the quarter - 432 thousand in mobile and 367 thousand in fiber - with a convergence strategy that leans on in-ground fiber infrastructure. T-Mobile shows a moderating account-add pace (277 thousand, down 13%), but higher profitability and rising ARPA.
The difference tells a story about stage: AT&T is still in the aggressive acquisition phase through its fiber rollout; T-Mobile, already the share leader, is transitioning to a phase where growth comes less from new additions and more from deepening the value of the existing customer. Both are strong - but at different points on the curve.
The Bull Thesis
Whoever reads it positively will point to an earnings line that beat, EBITDA growing 12%, strong free cash flow, a record NPS and proven network leadership. Rising ARPA indicates the company is pricing power, and the $3.3 billion return to shareholders shows confidence. The UScellular merger expands the base.
The Bear Thesis
Whoever reads it critically will point to the slowdown in the add pace - the number that moves mobile stocks - and to churn that rose year-over-year. In a saturated market, every addition is won at a price, and the rise in ARPA may come at the expense of recruitment. In addition, the stock is priced high, and UScellular merger costs weigh on the bottom line in the short term.
Summary
T-Mobile posted a strong report on the bottom line, with a clear caveat in the add pace. The comparison with AT&T is the real lesson: there is no single "winner" in the mobile market - there are two strategies, fiber versus wireless, aggressive recruitment versus deepening value, each at a different stage. For the investor, the question is not which is better, but which strategy fits the stage the market is in - and at what price each one trades.
Sources: T-Mobile US's official results report for the second quarter of 2026 as filed with the SEC (Form 8-K, July 23, 2026), including the subscriber figures, ARPA, cash flow and the non-GAAP metrics. The chart is shown in real time via TradingView.