Question about Apple Cell Phones
Replacing the screen on an iPhone is a difficult job. The digitizer and LCD are fused together as one unit and must be replaced together. You basically have to disassemble the entire guts of the phone from the back before you can get to the screws holding the display on the front.
Depending on whether you have the GSM (AT&T) model A1332 or the CDMA (Verizon, Sprint) model A1349, the procedures are slightly different. ifixit.com has a very good set of instructions with photos detailing each step for both phones.
CDMA iPhone 4 instructions
iPhone 4 Verizon Display Assembly Replacement
GSM iPhone 4 instructions
iPhone 4 Display Assembly Replacement
The part that gives people the most trouble is getting the two cables fed through the case correctly and connected, so pay extra attention when doing that part. It's very easy to pinch the cables and either break them or end up with them too short to reach the connectors on the motherboard. There's a corner on the flex cable that gets caught when feeding it through the hole, and you have to make sure to move the display side to side to make sure you get past that corner.
Posted on Sep 15, 2014
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Posted on Jan 02, 2017
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