T-Mobile's cellular Starlink beta program was initially restricted to five Samsung phone models. But the carrier has quietly expanded it to select iPhones running iOS 18.3.

T-Mobile partnered with SpaceX last year and launched a beta program for Starlink connectivity last December. However, the company originally only offered the option on Samsung ph

Starlink support appears to be a secret iOS 18.3 feature for iPhones, some of which now support satellite communication services from SpaceX — but only for users invited to join public beta testing of the service on US carrier T-Mobile. This supplements Apple’s existing satellite services supplier, Globalstar.