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Fourth generation iPhone. Repair is straightforward, but the front glass and LCD must be replaced as a unit. GSM / 8, 16, or 32 GB capacity / Model A1332 / Black and White. This page aims to help users troubleshoot, fix, and seek help for the iPhone 4.

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iPhone won't turn on after screen replacement

Hello,

I've just followed the directions on this site to replace a front screen for an iphone 4 that was smashed. After assembly I plugged in the phone to my computer using an apple connector but nothing happened not even a vibration - dead as a dodo.

Upon reassembly, I saw a very quick, short flash from the camera flash part when attaching the large shield-like part that has 5 screws on it (part 13 on instructions to disassemble). I was wondering if this means ive shorted it or something went wrong?

I've since taken it all apart, cleaned all connections with isopropanol and put it back together. Nothing's changed. I'm now going to try charging it overnight but until then, any suggestions?

Edit - battery now at 100% and restore performed. Links just fine to my computer too but still no screen activity. ughhh.

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Did you use any metal prying tools to unplug the battery?

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Nope, none at all, the battery came loose just by gently pulling the tab.

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You should always disconnect the battery when you are doing repairs.

Did you test the screen before assembly?

Otherwise you could try to connect the old screen to see if that is not the problem.

The camera flashing is not a good sign I only had that with liquid damage.

If that doesn’t work it look like you shorted something out.

You will need to inspect the motherboard for damages and see if you can change the damaged components.

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Thanks for your help. I did disconnect the battery and I kept removing static from myself during the repair but its still possible that I caught it. I've now tried charging it and its been vibrating alot but i think that's due to it being connected to a computer so i'm going to give it some more charge time and see if i can get the screen to come to life. If not i'll definitely try attaching the old screen again to see whats going on.

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tundrawind will be eternally grateful.
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