Reliance Jio and T-Mobile Launched 5G Standalone Roaming
The partnership enables international 5G connectivity for travelers moving between the United States and India.
Updated on Sept. 21, 2026 in Telecommunications
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Reliance Jio and T-Mobile have implemented 5G Standalone (SA) roaming between their respective networks, utilizing a connectivity platform provided by Syniverse. This development officially enables 5G roaming capabilities for customers traveling between the United States and India.
Why it matters
This integration aims to provide faster network speeds, lower latencies, and more reliable connections for international travelers. It marks a significant step in interoperability for 5G SA networks across major global markets.
The implementation relies on Syniverse to provide the secure interoperability platform necessary to bridge the two distinct 5G Standalone networks. T-Mobile has been developing its 5G SA infrastructure since 2020.
The players
Reliance Jio
A major Indian telecommunications operator and the only provider in India with a comprehensive PAN-India 5G Standalone network.
T-Mobile
A major United States wireless carrier focused on expansive 5G network deployment since 2020.
Syniverse
A global telecommunications technology firm that provides interoperability platforms for mobile network traffic and roaming.
The details
5G Standalone, or 5G SA, refers to a network architecture that relies exclusively on a 5G core, rather than anchoring on existing 4G LTE infrastructure. The Syniverse platform manages the complex signaling required to authenticate subscribers and maintain session persistence as devices roam between the two networks. Reliance Jio holds the distinction of being the only operator in India with a PAN-India 5G SA presence, facilitating this cross-continental integration.
Timeline
2020: T-Mobile began laying the groundwork for its 5G Standalone infrastructure.
September 21, 2026: The 5G SA roaming achievement was announced.
The Tech Race
This development pushes 5G SA roaming toward global parity, bridging two distinct markets into a unified coverage map. It follows years of internal network builds and marks a shift toward the interoperability phase of the 5G transition.
Travelers between the US and India can now access 5G SA speeds and reduced latency while roaming, provided they hold a compatible device. This service eliminates the performance gap often found when roaming on legacy 4G connections.
The takeaway
The move validates the readiness of 5G SA cores for secure cross-network interoperability on a global scale. Users should monitor their carrier's specific international roaming add-on pages for the official availability of these 5G SA data plans.
Further reading
For more on the development of global network standards, visit Telecommunications.
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