I was asking at the mailing lists about ofono configuration for PinePhone... and apparently it is not exactly simple to get it to work. (One thing is that there's no "RING" indication on AT channels, and it looks there's more.)
I'm looking for working calls and working SMSes, ideally with ringtones played when SMS arrives. So far postmarketOS with Plasma Mobile was closest... but the UI is really unstable, in what looks like hard to debug way. Is there something closer to working? Right now I guess getting Mobian to work and hacking incoming SMS notifications might be easiest..