Face ID no longer works on your iPhone X under iOS 11.2? Here is the solution

Apple released iOS 11.2 yesterday in final version for all devices. The update fixes several bugs and adds some features, including Apple Pay Cash in the US and faster wireless charging on the iPhone 2017. But now some users with an iPhone X have a problem since the update : Face ID no longer works.

When using face recognition, an error message appears on the screen, "Can not activate Face ID on this iPhone". Fortunately, there is a way to fix the problem: just restart your iPhone. To restart your iPhone X, you must hold the volume + button or the volume knob - (to choose) and the side button to the right of the device. Then you have to slide the "Switch off" button. Another method is to go to Settings> General and choose Shut Down All.

Several users have confirmed that this solution works most of the time. Some, however, have the error message that always appears, so try to restore if this situation arises.

We do not know exactly how many users are affected by this problem. We can note however that several people have switched to iOS 11.2 without having any problem for Face ID, it seems random.