Have you tried talking to otterbox? If the case caused the scuff, they should be responsible.
TMIG your pic kid and no, apple won't give you a free replacement. You clearly scratched it.
I don't believe it's possible, there was no damage to the plastic over the phone which was never removed, it had to have been there, people have been reporting the same thing. I could get it replaced, I just want to make sure Apple doesn't tell you it probably will be free and then tell you it's not once you send it away.
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There are thousands of people with the same issue, do I need to list the forum pages and links? I also don't know what TMIG means.
It's only an issue if you noticed it out of the box. If it wasn't there before the case was put it was caused by either you or the case.
I did not look out of the box but hurriedly put it in the case, the plastic never came off, there's no way.