VoLTE

So is this an unlocked HTC (purchased through HTC unlocked) or is it an AT&T HTC U11 that was then unlocked?
The unlocked purchased from HTC should support it.
IF its an AT&T that was unlcoked my guess would be yes but just my guess.

Mods might move this to HTC u11 forums since its device specific.
 
So is this an unlocked HTC (purchased through HTC unlocked) or is it an AT&T HTC U11 that was then unlocked?
The unlocked purchased from HTC should support it.
IF its an AT&T that was unlcoked my guess would be yes but just my guess.

Mods might move this to HTC u11 forums since its device specific.

Good idea. I moved it.
 
I think there's some confusion... There isn't an att u11 only unlocked and Sprint

THIS!!! People seem to be really confused about this. I don't think HTC helps though. They are listing the other operators as options when you buy the phone, even though if you don't select Sprint you're just getting the unlocked version.
 
In any event, I've seen on XDA that the unlocked U11 works flawlessly on T-Mo.... VoLTE and WiFi Calling.
 
T-Mobile is pretty good about this unlike other carriers who shall retail nameless. ;) BUT someone I know calls them dumb and dumber. ;)