Forum Discussion
Will unlocked phones work with T-Mobile Wifi calling ?
If I purchase an unlocked phone, for example an S22 Ultra unlocked version, will I be able to make Wifi calls on T-Mobile ? This is assuming I use a T-Mobile SIM with it, or eSIM, of course. The rea...
It's the firmware that makes the different. AT&T Verizon, and other carriers choose to use custom implementations of WiFi Calling that are set in their firmware versions. It is controlled at the carrier profile level, meaning you just can't switch it in most cases.
