In its most recent quarter, T-Mobile US added 2.4 million net customers, bringing its total subscriber count to nearly 140 million and maintaining double-digit year-over-year growth. After underperforming the broader market by roughly 25% in 2025, the company’s share price correction has reset expectations, making the stock more attractive at current valuations. With its market capitalization near $230 billion and customer additions outpacing peers, T-Mobile’s fundamentals point to renewed investment appeal, particularly as the broader wireless sector shows evidence of plateauing growth in established markets.

For the first time in the J.D. Power U.S. Wireless Network Quality Study, customers rated T-Mobile highest in five out of six U.S. regions—a substantial increase from its previous best of two regions and ending a 35-report streak dominated by a single carrier. Independent data corroborate this shift: Opensignal’s nationwide analysis of billions of real-user data points awarded T-Mobile wins in 12 of 16 performance categories, while Ookla Speedtest recognized the carrier as America’s Best Network based on over half a billion real-world tests. This customer-driven validation underscores the real-life impact of T-Mobile’s multi-year investment in speed, latency reduction and coverage.

Bolstered by the acquisition of Sprint’s mid-band assets, T-Mobile now holds the strongest spectrum portfolio in the industry, supporting a nationwide standalone 5G network and laying the groundwork for 5G Advanced and eventual 6G deployment. While its 5G home broadband business remains in its early stages relative to larger fixed-line competitors, the carrier’s clear runway for capacity expansion and peak-speed improvements positions it to capitalize on growing enterprise and consumer demand for high-throughput, low-latency services over the next decade.