I have had the Samsung G600 for a while now and it has been working fine until during one phone call the sound just cut out and now there is no sound when there is an incoming call and I cannot hear the other person and vice versa. But I can play MP3 music fine but even when the ringtone is MP3 it wont play. The alarm sometimes works and sometimes only vibrate. Has anyone had the same problem or give me a suggestion of what to do? I haven't dropped it or done anything to it!!