"Touch ID not working after screen replacement?"に関する回答I just replaced broken screen of my iphone 6, with another iphone 6 that I bought of craigslist. Installation was easy but after reassembling, the touch id was given error of " unable to complete touch id setup". Initially I thought I broke the home button wire during installation. But then I removed the screen and put it back to its actual iphone, and surprisingly touch id worked fine on its orignal iphone. Then I simply removed touch id button from my original broken screen and replaced it with the new screen(the one I bought from craigslist) and reinstalled it on my iphone and viola, it worked without any isssues. So, moral of story is, iphone simply changed the error code from Error 53 to "unable to complete touch id setup". Phone can still be used with this error but touch id will not work. Now I have a black screen with a white home button.