I got my wife an 820 on AT&T and for some reason the voice quality is terrible on her phone. I even sent it back and got another and have the same exact issue. It sounds as if she is at the other end of a long hallway wrapped in gauze. It comes and goes after the first minute or so. I've looked all over online, called AT&T and Nokia and no one else has this problem. She isn't holding the device funny and there is no case covering up the microphone. Does anyone here have any ideas? The only thing I can think of is for some reason the noise cancellation technology thinks her voice is background noise. I've tried her phone myself a couple times and no one complains about how my voice sounds. I don't get it. Thanks for any help.