I thought I might add my experience of converting a iPhone 4 to white. After reading several threads on the forum I decided not to got for any of the recommended sites as they all seemed to have problems non-authentic parts. I took the plunge and used www.whiteiphone4me.com I called the guy before I purchased and he seemed pretty helpful and assured me that the parts were directly souced from Foxxconn - who manufacture the parts for Apple. I paid £120 for the kit and didnt need to send my old screen back for that price either (he seemed to be the most competitive on price too). Upon receiving a few days later he was true to his word. When I took apart the phone (which isnt for the faint-hearted btw) the white parts were identical to the parts I took out. The white parts come with a new lcd too so no seperating off the glass like some had to with the 3G. I used ifixit to take the phone apart properly. Once put together the home button didnt work - turns out that the button electrics that come with the kit were faulty, so I used the original electrics by carefully peeling them off the black button. Despite this little issue I am really happy with the result, I do not get any light bleeding as some have mentioned - agreed, the home button is a little off-white but it is hardly noticable and the new lcd is just as good a quality as the original.