And worse, it differs when roaming. I am aware there are networks where if you are their customer VoLTE works but if you are roaming onto their network it does not work at all. With the exact same device.
I’d have to think that a network that shuts down their 2G network probably allows roaming devices to make calls over VoLTE. All those carriers that don’t allow roaming devices to make VoLTE calls probably have an active 2G network.
