Answer for Can iPhone X Face ID still work after repair?

Generally, replacing screen will not affect the normal use of face ID. However, we have got some feedback from our customers and fans that iPhone X face ID failed after screen replacement. Therefore we guess the problem is caused by improper operations during the repair, which results in the damage of flex cables or other components. Our got a video about troubleshooting the iPhone X face ID failure caused by the damage of flex cable. If your iPhone X face ID not working after changing the screen, Please have a look at this video: https://www.youtube.com/watch?v=bJCuMFeUiGU