I am having a problem with my iPhone 5. My iPhones headphone jack seems to not be functioning at all. When I plug in my headphones, nothing happens. Audio will still come out of the main speaker. I have done a full restore, and it has not helped. I've been able to fix muted headphones before with a q-tip, but so far that has been useless. Has anyone here had anything similar happen to their iPhone? My phone is a replacement that I have had for about 5 months with no problems. I am out of warranty.