high quality touch screen for mobile phone iphone 4G 1. 4G touch screen,we can test here one by one .2. 4G touch screen is A quality3.guarantee time:12 months5.4G touch screen color:black and white4.fast deliever,we will ship the goods to you 12-48hours when we get the money ,and we choose the the fast shipment .by DHL ,UPS ,EMS,Fedex mobile phone touch screen for iphone 4G