Face ID does not work on iPhone X Occurred on iOS 11.2

On December 2, 2017, the latest version of Apple's mobile device OS "iOS 11.2"Has been released. Money can be exchanged among users in the US "Apple Pay Cash"Although it is available,iPhone XIn the face authentication functionFace IDThe problem that it stops working is discovered.

Face ID not working on iPhone X after updating to iOS 11.2? A reboot should fix it | 9to5Mac
https://9to5mac.com/2017/12/02/face-id-not-working-on-iphone-x-after-updating-to-ios-11-2-a-reboot-should-fix-it/

A report that Face ID does not work from some iPhone X users who updated to iOS 11.2 just released has been raised. If face authentication using Face ID can not be used, a notice appears on iPhone X's screen saying "Unable to activate Face ID on this iPhone. (Face ID can not be activated on this iPhone)" That's right. How to activate Face ID is very easy, just restart the terminal OK.


iOS 11.2 is not activated only by some users, and Apple's media 9to 5 Mac said "There were no problems even if updating from iOS 11.1.2 to iOS 11.2", and similarly in GIGAZINE Editorial Department I tried updating iPhone X to iOS 11.2, but the problem did not happen. Certainly, however, some users are confronted with the problem that Face ID is not activated, so I am concerned about why some users will have problems.

According to the report, it seems that Face ID can be used if restarting iPhone X in most cases, so it does not seem to be a persistent problem. In iPhone X, the method of turning off the power of the iPhone and the terminal so far is different, and it is possible to turn off the power by holding down the side button and one of the two volume control buttons simultaneously for several seconds at the same time Has become.

In addition, in order to fix a bug where the iPhone repeats restart under specific conditions, Apple has released an update to iOS 11.2 earlier than originally planned.