Has anyone else had issues with the speaker going out on the Focus? I've loved the phone since I got it, but had this same issue with the first phone - got the store to trade it for a new one, and now same issue with this one. Speaker just goes out - no noise comes through (speaker phone, music, even ringtones). Comes through fine if I plug in a headset, but I need to be able to hear my phone ring. I have a case for it, but cannot identify any trauma to my phone that would have caused the problem.