In the 2026 J.D. Power U.S. Wireless Network Quality Study, customers ranked T-Mobile highest for network quality in five of six U.S. regions—a first in the study’s history. This surpasses T-Mobile’s previous best of two regions and ends a 35-report streak with a different carrier at the top. Independent real-world measurements from Opensignal and Ookla Speedtest® have also placed T-Mobile at or near the top across dozens of categories, including download speeds, latency and voice performance. The results underscore the success of T-Mobile’s multi-year network build strategy, leveraging its extensive 5G spectrum holdings, densified tower footprint and cloud-native architecture to deliver faster, more reliable service nationwide.

T-Mobile is deepening its collaboration with Netcracker Technology to migrate its digital BSS/OSS platform to a cloud-native environment. The move is expected to shorten wholesale service launch cycles from several months to weeks, while embedding enhanced security and privacy controls and enabling digital-first business models. In parallel, T-Mobile’s wholly owned subsidiary has filed to sell $1.15 billion of 5.000% senior notes due 2036 and $850 million of 5.850% senior notes due 2056. Proceeds will be used to refinance existing debt and support general corporate purposes, strengthening the balance sheet ahead of the company’s fourth-quarter and full-year 2025 results presentation on February 11, 2026.