I used one of those flashlight apps to turn my iPhone 4S screen all white, and I see there's a tiny black spot on the screen - a dead pixel. Will they let me do an exchange because of a dead pixel? I ordered it from the Apple Store, so would I have to do the exchange at the Apple Store, or could I do it at a Verizon store too? I wonder if I'd even be able to do an exchange, because neither the Apple Store nor a Verizon store would have any iPhone 4S's in stock, right? How does that work then, do you have to place an order for a replacement phone?