hi guys, i have an iphone 4 that i bought off craigslist from an at&t person and im currently a t-mobile customer and my iphone's camera has a discolored camera where the image would have a pink spot on the pictures, this includes indoors and outdoors. many of you guy have said it has to do with indoor lighting but when i do it outdoors, i still see the pink spot on my pictures. so if i go to apple and get a refurbished one with my old one restored so they dont know its jailbroken, would they need to activate the refurbished phone and asked for my at&t number when i dont have one??? Worse case is probably i would have to buy the new camera part and fix it myself so they wont void the warranty on it.