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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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touch screen dont work after changing home button

i change home button after the touchscreen dont work at all so i order a new one and change the complet lcd digitalyzer and still not working

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Maybe you should check if the touchscreen FPC connector is well, if there is the pin is broken.

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For the 4 if the digitizer connection gets scratched or bent bad enough it can cause the screens digitizer to stop working properly. If the flex is okay check the pins like Sophia said to and if those seem good then the board may have be damaged sometimes during the repair.

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