I have a new GS4, only 2 days activated, and the call audio has gone out. It happened in the middle of a call the first day I had the phone. I switched to speaker phone which works fine, but now I can only make calls on speaker phone. When I try to to switch a call off of speaker, I can be heard speaking but cannot hear anything on my end. I have checked the speaker volume which is high and mute, which is off, but they don't seem to be the problem. I've restarted the phone but didn't seem to help at all.
A couple times in attempting to call, I got a bit of static that cut in and out, like the speaker worked for a second than cut out, but most of the time it is complete silence.
Please help!