@Qkall yeah, I can make calls. Sound is a bit low, but it works :)
@Qkall how does it impact a call quality?
Both use the underlying stack:
gnome-session, g-c-c, network and modem manager, etc.
And both follow the gnome design patterns for mobile.
But the shell's themselves, gnome-shell and phosh are different, phosh is written in gtk and gnome-shell is not.
So sharing code between the two shells is hard.