all my headphones worked fine on my Iphone

[mgentry11]

All my headphones worked fine on my iphone but now seem to not work. The video and music is sounds like the vocal part is miles away. I can hear the music fine but not the singer. I can see the video and hear the audio fine but not hear the narrator of the speakers. If I take out the head phones and listen to the speakers everything sounds correct. I reset the phone still doesn't work.