"Touch ID not working after screen replacement?"に関する回答Maybe you guys should try to turn off the touch id (or delete fingerprint data) in the settings before turning off the phone then disconnect the battery and like Bobby Gorden said, press the power for about 30 seconds to discharge the remaining power in the mainboard.. then transfer all the original components (try not to damage any flexcables and dont forget te small metalplate underneath). After that, try to connect the flexcable of the homebutton first, then the flexcable from the backshield to the logicboard then the rest of the lcd/digitizer cables to the other connectors. Restart the phone, and try the touch id settings again. If these steps works, please let me know maybe i can get some better advice from others instead.. Thanks in advance.