iphone 4 only charges when its off and not when its off
So i went to the apple store because my phone was not charging and they told that it was water damage but it was not because i made a proffesional check my iphone. he than said that it was the thing were you plug the chrager to charge.after all of that my iphone 4 started charging when it was off but when i turn it back on it would not chrage, now it only charges when its off and not on. it even doesnt show the chraging sign on the statues bar at the top.PLEASE HELP!!!!
iPhone 4, iOS 5.1.1