So I finally got my new black iPhone 6 While I was holding it I noticed there's are small tiny scratches on the lower edge of the phone, right where the metal meets the glass. It's like it was scratched maybe while being assembled and the glass is sitting 'on top' of the scartches. They feel more like chipped paint than scratches. It's only visible when you hold the phone in a given angle. It doesn't actually bother me, but my question is, will this make it prone to rust or additional chipping in the future? Should I replace it?