Touch ID and home button not working
I have just completed a LCD Display replacement on an iPhone 7. I successfully transferred over the original home button. I have checked both the button, and the connector, and there are no damages to either. Even after this repair, this is still not working. I have also taken this to a well known mobile repair shop to see if they could diagnose the issue for me, and they are in the same boat as I am. Has anyone else come across this, and if so, how did you get around this?
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“I have checked both the button, and the connector, and there are no damages to either.”
Obvious and physical damage, perhaps, but not-obvious and/or electrical damage, probably. The home button on the iPhones are absurdly delicate. Too much heat while softening the adhesive, for example, can roast the touch IC.
You may also want to check the connection. The 7 has a tiny gasket around the connectors to help with the water resistance and it’s too easy for that gasket to get pinched inside the connectors when plugging them back in, which the phone would interpret as a damaged assembly.
из Steve