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I have a 5S, which goes haywire and the screen freezes intermittently.
Ghost touches galore!
I tried 3 different screens all with the same result, this is obviously an issue on the logic board.
Does anyone have a definitive answer to what is going on here?? Does anyone have a definitive answer on how to fix this?? Very irritating problem.
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I have fixed it a few times on iPhone 5 / 5s because of liquid damage being present on the board. In particular near the front panel connectors under the black plastic adhesive cover thingy.
I used some 99% isopropyl alcohol to clean the corroded / liquid damaged affected areas. Check the LCI (Liquid Contact Indicator) on the logic board if it's red or not. There are two easily visible ones when you open up the phone. If it's red the phone has had liquid gone internally inside the phone. If it's white then no liquids have gone into the phone.
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Theres no Liquid damage on the phone.
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No Water Damage On Device.
by Stavros Pehlivanidis