Okay so I need to take in my iPhone 3g 8gb. There are a couple problems with it. First, no headphones will fit in it. None of them. Second, the silent button on the side of the phone is very sensitive it when I walk I will keep feeling it vibrating. Last, the back of the phone near the USB area it is cracking. Some of the casing has fell off. My question is am I covered through the limited warranty? How about the warranty you purchase? I don't know if I got the extra warranty or not. Thanks a bunch in advance!