On Tue, 03 Nov 2020 12:49:24 -0500 Tad <t...@spotco.us> wrote: > 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. Our plans with that is to finish porting Replicant to Android >= 9 first.
Then it'll be easier to add devices like the Pinephone or other devices with upstream kernels (assuming they meet certain criteria like having a battery that can be changed, a somewhat isolated modem, etc, if not we're still open to collaboration with people or projects wanting to support these though). To add support for other devices running GNU/Linux the idea would be to try to port the oFono RIL to the Replicant >=9 version and use that. Denis.
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