Call quality sound issue
I have a bone stock HTC One on T-MOBILE in an area with almost 100% reception and some people have been complained it sounds like I'm underwater when talking to me. I did have to have my original HTC replaced. I don't remember any complaints with my first phone so I'm wondering if this is a phone issue. I also noticed it seems to happen more commonly with cell to cell calls and not cell to land line or vice versa.