For this to work your network must use a standard setup for VoLTE or WI-FI calling, for example, Three UK uses standard setup but Voda UK does not. Meaning Voda UK will not work.
What is Volte and Wowifi?
VoLTE is calling over 4G insted of the call dropping to 3G/2G and call quality is improved.
VoWI-FI is calling over a WI-FI connection in places where there is low or no phone signal. Quality is also better....
Was wondering if anyone here with a 3 subscription in Ireland or the UK can use data on the 2nd sim when abroad (with the 3 sim in slot 1)? I'm currently a 3 customer and had an LG G4 dual sim phone before and it wasn't possible to use 3G or 4G on...