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iPhone 7 not responding to touch

Background: bought iPhone 7 second hand in Feb 2020. Repaired screen August 2020 and again in September 2020. Same screen is now 2 years old.

Occasionally had periods of “glitch out” where phone goes mad and starts detecting non-existent touches.

Dropped phone many times, many cracks and some dead pixel patches appear. About 2 months ago the top right corner of screen stopped responding to touch. Not a problem. This week, the top half of the screen stopped responding to touch. A pain, but bearable using assistive touch to navigate the phone. Today, enough of the screen cut off so I can no long input passcode. A problem.

I’ve tested the phone with a spare screen (known to be working) and now it doesn’t respond to touch at all. Still lights up fine and boots to my lock screen and passcode entrance.

Any ideas? Is this the dreaded touch disease and if so, is there any way to retrieve my data (only important thing is the photos)? Got a new (second hand) phone on the way but I really don’t want to lose some previous photos.

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iphone 7 isnt really known for touch disease, it would be a case of maybe testing a different screen, or buying a month of zxw and test the diode readings on the connector

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@therepairer you said you tested with a spare screen not other screens so thats why i said about a screen and no 7 models have issues with the audio ic, out of all the 7 series i have repaired i have never came across 1 with touch disease, touch disease was common on the 6 series

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@therepairer Wow, touch disease in the iphone 7. Who knew? Been repairing them for years but not had one with "touch disease". Only when the screen has been cracked or smashed will it start playing up. Usually touch issues can be cured by a new screen and keeping it updated which people never seem to do.

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@strongbow Apologies both, I was clearly misinformed. Phone has been tested with more than one screen that is known to be working, to no avail unfortunately. Thanks for the replies

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“Touch disease” as it is known is not possible in the same way on iPhone 7 that it was in the iPhone 6 and 6 Plus. Cumulus and Meson, the chips responsible for the issues described in Touch Disease moved from the logic board, to the display. Touch disease was almost exclusively referring to the weakening of contacts in a very specific area of the board, which sees more flexion than other parts, making it subject to cracked or torn solder connections.

Touch related issues may still be occurring on a board level, but that would require much more granular troubleshooting, Due to the likely repeat attempts at plugging the display back in it could be damage to the connector itself. Or damage to one of the components in this area.

Sadly, you will need working touch to get data off the phone. But there are almost certainly ways to fix this. Attach some pictures of the board and connectors to your question. :)

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Interesting. thank you, I was under the impression that it was the 7 series, for some reason! I'll get some photos of the connectors and add them to the question asked.

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TheRe will be eternally grateful.
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