VOLTE and WiFi calling on unlocked devices


    What does it take to get these working? I just picked up a Sony XZ Premium and it's so much nicer and better than the latest Samsung or Apple phone. It supports every T-Mobile band and has Android 7.1, so why can't we get these features? Does Sony have to pay T-Mobile to support them?


    It seems the days of T-Mobile actually carrying and selling Sony devices are done (even the the Xperia Z, Z1, and Z3 were great phones), but a little support for something other than Samsung and Apple would be nice...

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