Do any combination of phones and OSes have support for desktop Linux apps, VoLTE, and dual-SIM?
I want to get away from Google. My current phone (Nokia G42) doesn’t seem to have support for any OS except Android. My ideal setup would be a Fairphone 5 with Ubuntu Touch, but that doesn’t seem to support dual-SIM.
Maybe look into the Oneplus 6? It has a dual sim slot and can run Postmarketos, though I have no idea whether the software can handle dual sim and stuff like VoLTE probably won’t work.