Why are you guys so harsh on the OP?
Honestly maybe Apple should make they're products a little bit better and issues like this wouldn't arise. The Black iphone 5 is basically one of the worst built phones on earth when it comes to wear and tear build quality. It's probably the easist phone to date to scratch. And god only knows how many people experienced scratches out of the box.
Sorry guys...phones shouldn't scratch that easy from a case being on the phone. The OP gets a case to protect the phone and instead the phone gets scratched from the case. Someone please explain the logic here?
I have my launch black iPhone 5 and it hasn't got one scratch and I never use a case.
It's obvious what happened. Grit got in between the case and the phone and acted like sand paper.