I created this template to help myself disassemble and assemble my iPhone 4 for screen replacement. I shattered my original screen and after I read how hard it is to keep track of all the different screws, I came up with this idea.
Using the template is really, really simple. You follow iFixIt's screen replacement tutorial (link above) and as soon as you unscrew any of the screws in each step, you put it on its head on the printed template.
Here's how to use it:
1. Print out the second page of this tutorial - the template itself. 2. Scotch tape it to your desk before you start so you don't accidentally topple it over. 3. Follow iFixIt's guide and as soon as you unscrew a screw, place it on its head on the template. 4. Follow iFixIt's tutorial in reverse order to assemble the iPhone 4 and pick the needed screws in each step from the template.
- The spare space and the additional hints on each row (Pressure contact, SIM card tray, etc.) will also allow you to store the various parts you take off the frame in the process. You can check the third page of this document to see how I used the hand- written blueprint for this diagram in an actual disassembly. - Many novice users get poor Wi-Fi reception when they assemble back the phone as they manage to lose the little metal piece that sits on the top of the bigger EMI shield (the bigger black contact cover). It's placed where the green 4.8mm Phillips screw from step 13 is located. Make sure the metal piece is in place when you disassemble the phone. If it falls out, be careful putting it back on, it's fragile and can easily split leaving you with no option but to order the whole black shield as a replacement part. - The yellow 1.4mm Phillips screw in Step 13 actually screws into a nut, which may fall out in the disassembly process. - I advise you not to try and not remove the last six screws that hold the display (the ones with washers). They are a hell to put back on and it's really much easier to just unscrew them a little and leave them in their places.