I'm as well using my Unlocked S8 on AT&T
After this update, finaly VoLTE appeared in settings.
However when I doing a call, in phone app nothing is showing up, Is it regular or HD-voice call.
Anyway Great Thanks for VoLTE!
This Update is Terrible you remove a feature called the custom text tones for a single tone that is supposed to be "help full" when it isn't, you don't know if your getting a text or e-mail. what is sworse are the badges come on Give us back the Text tones we used for our contacts Like NOW!