AT&T Galaxy S8 Calls fading in and out

[levanthai]

https://vincitytaymodaimo.vn/https://vincitytaymodaimo.vn/

 

[mark7914]

I get that and I haven't installed the update. I think it happens when the phone flicks from standard voice mode to Voice Over LTE - where we live the signal is dreadful so it remains on the latter most of the time and sounds very clear but just occasionally it will flick between them with that result. This may however have nothing to do with your issue.