I have an iPhone 3G, and was wondering if Apple would replace it with a new one. It has some dirt under the screen and dead pixels (like 5 or 6), and I wanted to know if they would take it back and replace it with another one. I have the white 16GB model. It had been dropped once, and has some dents and scratches on the back. Would they replace with a black model if I asked for one? Also, I didn't purchase Applecare. Thanks.