I keep having dropped calls on my device, my carrier has a bit of an unusual setup since national roaming hasn't really been a topic in Norway. It uses a SIM app to switch between home and roaming network. Probably because a lot of people complained back when it was new that it didn't work until you enabled roaming in the settings.
Home network doesn't do 2G voice and when signal drops below a certain level it switches to the roaming network for voice. This never works so the call just drops.
VoLTE works on the home network, no indicator or provisioning status in the INFO menu or anything.
Is there a way to disable it?