I have my iphone 4 since day one and I noticed yesterdays some spider web scratches on the back, I was shocked because I took a lot of care of my iphone anw I found this replacement on ebay http://cgi.ebay.com/Original-iPhone...er_MP3_Player_Accessories&hash=item3a5c683f50 I have the following questions. It says on the product description that is is just the glass, so when I do replace it I still have my original product id and codes that are on the back bezel (FCC,IC). Also is it a genuine apple glass or it might be of different quality. I am thinking also to apply Best skins on the Back instead of replacing. Do you think the scratches will be lest visible with the skin?