As we know,when our iphone is broken, the repair cost will be very higher,and the screens repairer use is usually copy,quality is not so good.In fact, repalcing screens is very easy, if u do not know, u can see www.ifixit.com. last but not least, which quality screens should u choose? i think u should choose original new screens or original refurbish screens, what is their difference? how to distinguish original screens and copy screens? more details, pls see
Original new screens for iphone4 4s: http://www.aliexpress.com/store/prod...258198879.html
original with replaced front glass: http://www.aliexpress.com/store/prod...262056395.html