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Face ID on the iPhone X: Apple releases Face ID white paper and support document

Glenn Fleishman | Sept. 28, 2017
Apple introduced Face ID with the iPhone X, a new way to secure the phone. You have questions and we'll have the answers in this FAQ.

In several cases, you have to use a passcode (these parameters also apply with Touch ID):

  • After restarting.
  • After any 48-hour period in which you haven’t used Face ID to unlock the phone.
  • After 6 1/2 days, an four-hour timer starts, and if you don’t use Face ID within those four hours, you’re prompted for a passcode the next time you unlock.
  • After five failed attempts to unlock with Face ID.
  • After disabling using any technique above not already mentioned in this list.


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