iOs & iOs Apps (inc iPhone, iPad, iPod, iBrick)

Does anyone have any experience of replacing the rear glass screen of their iPhone 4? I want to replace my cracked one as I would like to sell on once I upgrade. I'd like a glass screen, and there are many options out there, but reviews tend to state that they are actually plastic screens.

Where can I get a glass replacement?

So I bought it anyway, despite recent reviews saying it wasn't actual glass. Whether it is or not, I can't tell. It really is simple to fix. Took me about 20 seconds to take off smashed back cover and replace. Well worth the £5.