I have a new S10e from Three network in uk. I can't make the VoWiFi work at all and VoLTE only works when I'm making a call and not when someone calls me.
I confirmed with Three customer service twice that both options are enabled on my account and they are also enabled on my phone. I even tried factory reset but with no success. The phone comes directly from three so this should not be an issue.
I'm just feeling hopeless.
Funny enough when I used a spare BT sim card everything worked like is should.
That is correct. With BT sim card everything works as expected. When I put my Three UK sim card back in it goes back to nothing except HD calls when I make a call but it goes back to SD calls when the same person calls me back. Wifi calling doesn't work at all. When I put my Three sim card into any other phone it's the same result.
Three customer service assured me a few times that both VoLTE and VoWiFi are enabled on my account. I am now waiting for a replacement sim card, could this possibly fix the issue?