Cannot make calls

[gregb49]

Sim card network is registered i cannot make calls modem is enabled

I'm assuming that you changed from Manjaro, because the pphone crashed after making calls. 
I am having no problem making and receiving calls, using PostmarketOS, however after not using the pphone for a few hours, the modem disappears and I have to reboot.

I installed the software at The Modem Distro but that seems to have made no difference but maybe it would in your case?

 (I'm intrigued that @dukla2000 uses his as a daily driver. I would like to be able to do that.)