Why do I need to keep entering my pass code on my iPhone 16 to use face recognition?

Seems like a couple times a day recently I am asked to enter my passcode to use facial recognition on my iPhone 16 Pro. Once facial recognition has been set up I should never need to enter a passcode again. I mean, what is the sense of facial recognition if it isn't secure? Is it secure? Please, let's stop with the useless additional actions.

iPhone 16 Pro, iOS 18

Posted on Mar 28, 2025 3:00 PM

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Question marked as Top-ranking reply

Posted on Mar 28, 2025 3:18 PM

It is not true that you should never have to enter your passcode again when setting up Face ID. There many times where the Passcode will be required such as:

  • The device has just been turned on or restarted.
  • The device hasn’t been unlocked for more than 48 hours.
  • The passcode hasn’t been used to unlock the device in the last six and a half days and Face ID hasn't unlocked the device in the last 4 hours.
  • The device has received a remote lock command.
  • After five unsuccessful attempts to match a face.
  • After initiating power off or Emergency SOS by pressing and holding either volume button and the side button simultaneously for 2 seconds.


If the device is having trouble recognizing your Face, then turn it off and then back on to set it up again. As for security with Face ID:

The probability that a random person in the population could look at your iPhone or iPad Pro and unlock it using Face ID is less than 1 in 1,000,000 with a single enrolled appearance whether or not you're wearing a mask.

About Face ID advanced technology - Apple Support


As for guessing a passcode before the device is locked due to too many attempts, that is virtually impossible. For Face ID the probability drops when also using an "Alternate Appearance".

1 reply
Question marked as Top-ranking reply

Mar 28, 2025 3:18 PM in response to Ezzyme

It is not true that you should never have to enter your passcode again when setting up Face ID. There many times where the Passcode will be required such as:

  • The device has just been turned on or restarted.
  • The device hasn’t been unlocked for more than 48 hours.
  • The passcode hasn’t been used to unlock the device in the last six and a half days and Face ID hasn't unlocked the device in the last 4 hours.
  • The device has received a remote lock command.
  • After five unsuccessful attempts to match a face.
  • After initiating power off or Emergency SOS by pressing and holding either volume button and the side button simultaneously for 2 seconds.


If the device is having trouble recognizing your Face, then turn it off and then back on to set it up again. As for security with Face ID:

The probability that a random person in the population could look at your iPhone or iPad Pro and unlock it using Face ID is less than 1 in 1,000,000 with a single enrolled appearance whether or not you're wearing a mask.

About Face ID advanced technology - Apple Support


As for guessing a passcode before the device is locked due to too many attempts, that is virtually impossible. For Face ID the probability drops when also using an "Alternate Appearance".

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Why do I need to keep entering my pass code on my iPhone 16 to use face recognition?

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