For #privacy reasons, I run it without #SIM, so I can't comment on normal phone calls. I like to use it for #SIP calls, but it seems, that #gnomeCalls still has one or the other bug in that respect. I hope for a fixed version soon™.
I use the #PinePhone for chat (#Dino), offline and online maps (#mepo, unfortunately not yet in #Debian), web (#Firefox) — but battery life is amazingly short.