I recently replaced the back casing on my 1st gen iphone. Once i finished putting on the new casing i noticed that when i went to turn my ringer volume up, it worked but it said ringer (head phones) like my head phones were plugged in. So i plugged my head phones in and then tried turning my ringer volume up and down and it just said ringer. The problem is that when my head phones are plugged in now, the sound comes out of the iphone speaker and when my head phones arnt plugged in, the sound wants to come out of the headphones. Anybody know of any sollutions?