I've had my iphone for about 6 months now. It's been working fine until recently. Anytime anyone calls, I see the name pop up, I can answer it, but it won't ring. I can listen to music, I have all of the normal sounds, it just won't ring when someone calls me. I've checked the settings, made sure it was all the way up, I don't have any fancy schmancy ringtones (so it's not corrupted or anything). Any ideas on why this is happening?