[SnoopZ]

Originally Posted by BenMcr

VoLTE is 4G calling.

Without it then 4G is used for data but 3G is used for voice calls, so may have different signal availability between the two.

I'm pretty sure VoLTE is a required part of a 5G service so as Virgin Media have already announced they will doing 5G plans, then I'd expect that VoLTE will appear at some point.

You get VoLTE on 4G too, you can test this by putting phone in airplane mode and turning on Data, if you can make calls you have it.