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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Why doesn't the lower half of screen does not respond to touch?

My iPhone 4 screen cracked awhile back, since i was no longer under warranty and it cost $200 to get screen replaced by Apple i purchased a replacement screen from I replaced the cracked screen with the new one, the iPhone turns on and works fine except that the lower section where you slide to unlock doesnt react to touch if there is some type of button such as call or cancel. But if its slide to unlock the screen works. I have taken it apart to make sure nothing is broken or if anything wasn't connected and everthing seems to be fine. Im at a loss of what to do, as I am trying to contact AX Micro (directfix) on either getting another screen or a refund. I can slide to unlock phone but anything else and the phone doesnt react to touch on the lower inch of the screen right about the home button.

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James, it does sound like a bad digitizer. It is my experience that if an area of the screen is unresponsive, a replacement of the assembly will fix this. Hope this helps.

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I have iphone 4s and the same problem im facing my 4s screen not rspond at the center of the screen where upper letter are located on keyboard and sometimes right full corner is stopped working where letter P is located.

i already sent my phone to local authorised dealer of apple and they said we changed two LCD on this phone but the problem still remains its not the LCD/DEGITIZER problem its logic board problem.

then i came back to home with my old lcd i opend the phone and also detached the board and clean it with alcohal i also clean the A5 chip and other chip which is located under the metal cover.after cleaning the board i reassambled my iphone and for 1 day my iphone touch runs very smothly like a new phone...but then on next day again it started touch problems.

please anyone can help me to figure it out :(

my iphone is not it warranty.

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i have this problem too. what i did to fix it was tap the part where its not working. tap it 10x in front and at the back. it worked for me! i was so surprised. i never needed to restore it

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James will be eternally grateful.
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