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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unresponsive iPhone 4 touch screen

Hello I'm trying to fix a friends iphone 4 GSM model on 5.1 it was dropped and has no water damage, the touch screen does not work at all i have taken the logic board out on placed it in a working phone and it still does not work, i have restored to stock 5.1 firmware so its not a software issue. i have used Isopropyl Alcohol 100% pure to clean all contacts and have checked the connections several times and still a unresponsive touch screen. and yes i have tried holding home and power buttons to reboot many times still no go.

any suggestions would be of help.

Answer this question I have this problem too

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1 Answer

I have a same problem its a logic board issue.

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