We just released a short repair video for the Apple iPhone 4. It should help anyone looking to make a self-repair (although we highly recommend professional repair service due to the complexity). The video gives an overview of the steps needed to remove the iPhone 4 back casing, internal screws, logic board, vibrate control, dock connector, Front Glass, LCD, and Frame.
Always purchase quality parts for these repairs. All parts and repair services aren’t created equal. We regularly receive 3rd party parts from our customers who couldn’t complete the repair. These parts are usually always of lesser quality than our shop. It does make a big difference especially when it takes about an hour to complete this repair properly. The only way to test these parts are after complete reassembly.