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.

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Couln't type certain characters; I, K, M

I dropped my iPhone 4 and replaced Digitizer + LCD assembly with new one. After that, I couldn't type I, K, M characters. So I doubted there was something wrong with new LCD assembly. Therefore, I changed with another new LCD assembly. But my phone still has the same problem. How can I solve this problem? Who experienced the same matter? Thanks,

Answered! View the answer I have this problem too

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You best check your ribbon cable connector for the digitizer part (the horizontal one).

Please check and make sure that it is clean and none of the contact are covered by anything. If neccessary clean and try again.

In the worst case you might have damaged the connector on the motherboard and need to replace this one.

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