Originally Posted by
Stuart_h:
“Thanks both. Makes sense
”
Indeed.
O2 and 3's "wifi calling" is app based, and clunky, as others have mentioned.
EE (and Vodafone shortly, or now, I believe) have "true" wifi calling, where the phone can natively switch over to WiFi to make and receive calls and texts, automatically, with no intervention from the user.
If you have an iPhone or supported Windows phone, you can use this straight away.
Currently, if you have a supported Android device, you need custom firmware, which is only available on contracted handsets supplied by EE. I believe this will also be the case for VoLTE.
I'm hoping that Marshmallow on the new Nexus devices removes this stupid requirement, as lots of people like me refuse to buy a phone on what is effectively "hire purchase", and in the case of EE, with a ludicrously long contract term.