not cleaning it with anything. just a cloth every now and then. I talked to apple and they said never heard of it doing that. Have to go to a store and see a tech.
anyone having issues with the color rubbing off phone?? I got it when it was released. Never use a case but never had one with my 6 or 6s either. All the black is coming off the sides and bottom of phone!! Any help or if its helping to you.