Fifth generation of iPhone. Repair of this device is straightforward, and requires screwdrivers, prying tools, and patience. GSM/CDMA / 16, 32, or 64 GB / Black or White.

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Screen is unresponsive to touch in a horizontal strip

My iPhone 4s has developed a dead spot that is unresponsive to touch input. The strip is about 1/4" in height and extends completely across the screen, at about 3/4 of the way up from the bottom of the screen. I have also had occasions where the entire screen became unresponsive when the phone was only mildly cold (like in my pocket on a 40 deg F day).

Thinking that the digitizing screen was at fault, I tore down the phone completely and replaced the display/digitizer assembly. This was partly successful, in that the screen and new digitizer work... but the dead strip remains. I am guessing that this is a problem on the logic board. I doubt that it is the connector; my cold temperature experience seems to point to the solder joints of the digitizing chip on the logic board. What say you?

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Hi,

I have a Iphone 4. I have just changed the dock connector. When I restarted the Phone, I had horizontal strips on the screen, black and white, The cell works, it's receiving phone calls, I can speak, SMS are taken, we heared the little music. The touch screen is working, I think so.

I don't know what is happened.

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