How to Repair and change your iPhone 3G touch screen
In this Electronics video tutorial you will learn how to repair and change your iPhone 3G touch screen. Remove the 2 Phillips #00 screws from the dock connector end. Use a suction cup to gently pull up the display assembly. Use a spudger to disconnect the black ribbon cable labeled 1, 2 and 3. Remove the screws of the display assembly. Peel up part of the black tape and remove the screws under it. Gently rotate the spudger, lift the LCD from the glass and separate it. Heat the top left of the touch screen with a hair dryer. Slowly lift the left corner and remove the touch screen. Now take the new touch screen and fit it as shown in the video.