So I have rabbit holed down this issue a little bit to find no sound answer. The phone supports the band that my carrier requires, however when I leave the phone to a network preference or 4G/5G - the data works great but calls cannot be placed or received. I still get notifications that I missed calls but those come through MMS.
I'm not sure if it's just a lost cause at this point or what but when I was back home (in the states), VoLTE worked just fine. Here it doesn't though? I can understand why if the band is supported.
