Carriers across the world are currently phasing out and re-farming 2G and 3G spectrum for upcoming 5G. Furthermore phone calls and SMS cannot be made on 4G without an IMS stack.
On the Android side of things: There is currently no work on open source IMS for Android. On the "Linux phone" side of things: The PinePhone and Librem 5, with their EG25 and PLS8 modems respectively, handle IMS/VoLTE internally. Aside from sending an AT command to choose an appropriate profile for the carrier, there is nothing required in kernel/userspace. They appear to be the only currently viable options for phone calls in 2021 going forward. I don't have any solutions. I just want to start a discussion about it. Food for thought. I considered posting this to the F-Droid forum, but felt it might be more applicable here. Regards, Tad. _______________________________________________ Replicant mailing list [email protected] https://lists.osuosl.org/mailman/listinfo/replicant
