Touch ID connector shield
I recently bought a iPhone 5s on eBay with a bad screen, I replaced the screen and moved the home button over to the new screen to keep the Touch ID functionality. This was the first time I had done a screen replacement. After everything was put back together the screen powered on and Touch ID works but the button press didn't work. I found that by putting foil inside the phone so that that Touch ID made contact with the other internals of the phone made it work properly. I then did another 5s screen replacement and noticed a cover over the Touch ID connector that was not on the first phone. I'm assuming the button press issue is a grounding problem and that's what the foil fixed. Does the cover that would normally cover the connector that plugs the home button into the motherboard provide a ground connection for the button to work? As of now the home button doesn't work 100% of the time with the foil and I would like to have it fixed. Could someone please explain how the Touch ID connector shield would affect the home button pressing functionality. If that doesn't have to do with it what else would cause the Touch ID to work but not the press of the home button. Thank you!
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