Apple has determined that some iPhone X displays may experience touch issues due to a component that might fail on the display module.
An affected device may exhibit the following:
● The display, or part of the display, does not respond or responds intermittently to touch
● The display reacts even though it was not touched
Apple or an Apple Authorized Service Provider will replace the display module on eligible devices, free of charge. You can check if your device is eligible at the link below.