Enable WIFi Calling on unlocked HTC 10
It's supposed to be in the Call app under "Enhanced Call Service." It is not in there.
Was advised by AT&T rep that their policies had changed and will no longer intentionally block WiFi calling from unlocked, non AT&T branded phones. Rep altered the necessary provisions so that my phone could make WiFi calls. Then he told me all I needed to do was go to the AT&T store for a new SIM. Got the new SIM. Still no WiFi calls (but HD Voice works fine). HTC suggested a hard reset. Does this make sense? Or is the feature simply not supported for a technical reason? My phone DOES support Wifi calling. But I cannot find it anywhere in the phone menus.