iPhone 4s 16GB White - only 2 months old (recently replaced by Apple),but little chip on the bottom +

An iPhone 4S 16GB White, that is only 2 months old, as I have had a new replacement from Apple. Everything is new, battery is extremely long lasting compared to older iPhones, phone has had screen protector on the front and the back from the very beginning I got the phone. However, I accidentally got a little chip on the bottom left corner of the phone but other than that there is no scratches on the screen etc. I could provide an image of the chip if requested. berecently been replaced by Apple 2 months ago