I just purchased the Iphone 4 today and noticed a black spot onm the app store's light gray background, it wouldn't come off. I called apple support and he assured me making an appointment with the local apple retailer is the way to go. I told him what he thinks will happen and he said they will either try to fix it or replace it. He couldn't promise anything, but assured me even if its not noticeable until you know where to look, apple will help. What do you think? My appointment is today (saturday) and I am hoping they just give me a brand new one. Do you think they will do it for 1 dead pixel?