Touchscreen inaccuracy when plugged in.

I've found an issue when my iphone 4s is plugged in, the touchscreen is inaccurate and non-responsive at times. I've been able to reproduce it, and have read several other postings on the issue. The solution in the forums (which works for me) is to touch the metal bezel with your hands. While that works, I have a case on my phone, and I don't want to take the case off every time I want to use my phone when its plugged in. Apple doesn't have a fix for this? I see the issue dating back to the iphone 3.

Absolutely. I found that if you touch the band around the phone with a finger, the screen reacts normally.
Haven't quite pinned down the problem yet but must be an earthing issue.
I've tried a non-Apple cable and two Apple cables and they all behave in the same way:
All three cables (and the screen) don't work if you don't touch the outer band when plugged into my cheap mains plug.
All three cables (and the screen) work correctly when used with a computer's USB port.
Tomorrow I'll try the Apple mains plug that came with the iP4.
(Having said that though, my car connector works fine and I can operate it one handed - Griffin PowerJolt SE)

Similar Messages

  • Touchscreen (digitizer) inaccuracy when plugged in.

    All,
    I've been noticing that after my iPhone 4 is plugged in for a while, the touchscreen no longer registers touch instances accurately. This is particularly frustrating because I plug my iPhone in while I'm using it for gps navigation in my car and it's virtually impossible to manipulate anything in the application due to the touchscreen inaccuracy. Has anyone else had this issue? Is Apple aware?

    Absolutely. I found that if you touch the band around the phone with a finger, the screen reacts normally.
    Haven't quite pinned down the problem yet but must be an earthing issue.
    I've tried a non-Apple cable and two Apple cables and they all behave in the same way:
    All three cables (and the screen) don't work if you don't touch the outer band when plugged into my cheap mains plug.
    All three cables (and the screen) work correctly when used with a computer's USB port.
    Tomorrow I'll try the Apple mains plug that came with the iP4.
    (Having said that though, my car connector works fine and I can operate it one handed - Griffin PowerJolt SE)

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    Try unplugging the charger from the wall outlet, turn it 180º, then plug it in again. (The prongs will now be in the opposite holes in the wall outlet.) If it now works properly, then the charger is defective, and has some current leakage from the high voltage input to the low voltage output. This could be dangerous, and the charger should be replaced.

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    ------------------------------------------------------------------

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