According to GSM Arena, this will be supported by upcoming Starlink V2 satellites but will work with existing phones as it will use an existing band in the PCS spectrum.
While the existing radio hardware in the current phone will do the job, it’s not yet clear what software updates will be required, according to GSM Arena.
T-Mobile and SpaceX are expected to begin beta testing the new satellite in late 2023 when Android 14 arrives. Although initially it will cover the United States, the companies plan to expand the service to cover the entire world.
It will be slow, around 2-4 Mbps per cellular area, but that’s enough for hundreds of thousands of text messages. And not just simple SMS, MMS will be supported and even “participating messaging apps”.
Later support for voice calls and even mobile data will be added, although usability for general internet browsing is unknown, the service should have enough bandwidth for 1-2000 voice calls which is great in emergencies and in remote areas, GSM Arena reported.