-- The screen cannot turn on/has touch issue/flash/ has lines/ghost click/no display?
Please try this: Power off your phone, disconnect all the cables including the battery cable, clean the connector on the motherboard, reconnect the cables, leave the phone alone for a while in a dry environment, then do a hard reset on your phone to power it on.
--Why is touch ID not working after installing the new screen?
1. The home button that came with our screen doesn't have TOUCH ID function, the touch ID only works with the original home button. Please transfer the original home button if needed.
2. If the touch id is not working after using the original home button, please reinstall the home button and make sure the connector is connected correctly. Then reset the touch ID in your phone setting.
---We have all the product strictly tested before shipping in order to offer the best products and service to our customers.
---If there is any question or problem with iPhone 6s screen replacement, please let us know via Amazon message or email address on the package box. Thank you!