[BlueTemplar]

Hmm, but SMS rely on the cellular tower protocol, basically being carried on the status messages that cellphones already constantly send/receive anyway - they don't use the IP (at least until the tower).

So I'm not even sure they can be sent/received by satellite ??

[lights0123]

Starlink is using 5G, a cellular tower protocol. The only other option would be WiFi which can not do long distance, at least without both ends being designed for it (which a cellphone is not).