T-Mobile and Jio Achieve World’s First 5G Standalone Roaming

Supported by Syniverse's global mediation platform, enabling seamless cross-border 5G BELLEVUE, Wash., September 21, 2026--(BUSINESS WIRE)--T-Mobile and Jio made wireless history today, achieving the world's first 5G Standalone (SA) roaming connection, enabled through interoperability with Syniverse. It's proof that a truly seamless next-generation network experience isn't just a promise — it's here, setting a new benchmark for what cross-border 5G should feel like, everywhere. This enables T-Mobile customers to experience true 5G SA roaming while traveling internationally — a first anywhere in the world.