do not buy from iphone4parts.com
They advertise high quality glass parts but the sad fact is that this stuff isn't high quality at all. They're selling the same products available on ebay at half the cost.
One might say, i want to buy from a site that has some sort of customer service... their customer service sucks. When they ship damaged items... GUESS who is responsible for the shipping back? Good luck proving that the damage was done before you received it and not from a "mis install" They won't even begin to work with you until you file a dispute with your card company.
Best bet is to find what you want on their site, then look for the same exact item on ebay. Guaranteed to find it. They're also marketing their stuff as OEM which it is not. A majority of their products are branded with apple logos "designed in california", serial numbers and the whole works. APPLE DOES NOT MAKE THESE PRODUCTS. Even the black and white replacement pieces are not not OEM.
Also check bbb.org for complaints filed against them... there are some in there .
