I just got the Galaxy 4 2 weeeks ago from ATT. Yesterday I went to listen to Pandora and I plugged my mp3 players headphones in to the phone. No sound came out of the headphones and the sound kept coming out of the phones speakers. I tried 2 other pairs of headphones I have and they either didnt work or sounded terrible. I plugged in the headphones that came with the phone and those seem to work fine. I did some google searches and its seems like other people might have been having the same issue. Does anybody know why the only headphones that seem to work with my Galaxy 4 are the headphones that came with it?