Fixes: Unable To Activate Face ID On This iPhone

Fixes: Unable To Activate Face ID On This iPhone

It happened with the iOS 15 upgrade, and suddenly you are abruptly out of Face ID and dropped with a message “Unable to activate Face ID on this iPhone” error, however, you may have got fixes for your trouble with this latest iPhone OS bug that prevents you from setting up Face ID.

The guide will take you to quick troubleshooting steps for fixing this error. It is not obvious for iOS 15 upgrades many other claims that Face ID is not working on this iPhone messages appear after a screen replacement on their broken iPhones.

Reasons Why Unable to Activate Face ID on This iPhone

Recently Face ID activation issues become a common problem with many iPhones going into security glitches, that encounter FaceID to stop working and force users to return on touch ID or move back to the old passcode methods for iPhone screen locks. It is like any other iOS error, that comes with the goodness of IOS system updates.

In this section, you’ll find some of the basic causes that happen to be the reason for Face ID errors and restrict you from activating the Face ID on your iPhones.

Here are the common reasons why Face ID fails in the first place and possible causes that might create errors on your iPhone to block Face ID:

1. Can’t activate Face ID after being used by someone else

If your iPhone is in use by someone else, it’s will be possible that the person has set up his Face ID on your iPhone. That’s me wondering why my sister unlock my phone using face recognition? She might have pre-set his face on my iPhone 12, which she is using. It could be the reason that your Face ID is working for someone else rather than you since your iPhone recognizes the other person’s face and assumes ownership.

2. When you’re having trouble with Face ID, make sure your eyes are open

Face ID didn’t function while your eyes are closed because TrueDepth sensors are not confident about your position as an alert user. Your iPhone identifies when your eyes are open or closed, so this could be a legitimate reason your Face ID didn’t unlock.

3. When setting up Face ID make sure you’re looking directly at the iPhone

You couldn’t unlock your iPhone if you weren’t directly facing the Truedepth camera sensors. It is also critical to properly set up your initial Face ID while facing the screen. It is due to the fact that Apple uses unique face unlocking techniques that do not allow access to the device when the eyes are closed or the face is turned away.

4. Unable to activate Face ID after iPhone drops

When you are unable to activate Face ID on this iPhone after dropping, this implies that internal components have been damaged, and maybe sensors have been destroyed. That’s why you’re having problems unlocking your phone using Face ID because it is faulty.

5. iPhone won’t let me set up face ID after screen replacement

When you are unable to activate Face ID on this iPhone after screen replacement you may worry about the authenticity of the screen and other components. Counterfeit parts could be the reason your touch screen not working and Face ID got problems. This situation can be reverted with the replacement of your iPhone and iPad’s broken screens from an unauthorized service center.

6. Can’t get Face ID to work on iPhone when updated

The common reason that brings the unable to activate FaceID error is not having updates. To fix that you need to update iOS to the latest version that likely removes all teh bugs and fixes your iDevice problems that are relative to FaceID features.

5 Fixes To Solve Unable To Activate Face ID On This iPhone

1. Clear Your Face by Removing Sunglasses, Face Covers and Masks

Clear Your Face by Removing Sunglasses, Face Covers and Masks

Apple Facial ID won’t recognize you in disguise if you’re wearing a hat, mask, or scarf. It will respond to your clear face when you have removed the wearings, such as hats, sunglasses, and face masks. It is a simple tip to remove obstructions from your face to use the Face ID on your iPhone with confidence because the TrueDepth camera will recognize your face and unlock it quickly.

2. Clear the Path of the Camera (TrueDepth)

Clear the Path of the Camera (TrueDepth)
Clear the Path of Camera (TrueDepth) to ID Details

The TrueDepth camera has different sensors including a low light sensor to be able to see in the dark and correctly recognize your face. But for some things you should take notice and make sure nothing comes between your face and the TrueDepth camera. Your eyes, lips, and nose are visible to the camera, and don’t wear any sunglasses or face masks. If possible use it in a well-lit area and look directly at the iPhone and keep the TrueDepth camera free of everything that covers the sensors.

3. Put Your iPhone in Portrait Mode for Face ID

Simply hold your iPhone in the portrait selfie position to easily unlock the screen by using TrueDepth cameras to detect your face and unlock the screen. Face unlocking requires camera alignment, and when you hold your iPhone in different orientations, Face ID takes time to identify your face and can be unreliable at times. A simple trick is to hold your phone in portrait orientation so that the facial recognition software can easily scan your face.

4. Distance your iPhone from your Face for a Complete Look

When your face is too close or too far from the phone’s front camera, your Face ID does not work and leaves you to passcode entry. This is why you should place your iPhone at a normal distance for Face ID to work properly. Your arm’s length should be enough distance for your iPhone or iPad camera sensors to completely recognize your facial identity and unlock the phone without troubles

5. Check your Face ID Setting Options

Check your Face ID Setting Options
Disable and Enable Face ID

It’s possible that your Face ID settings have been changed and you aren’t aware of it. You can check your Face ID settings to sure that everything is enabled and working properly for sensors to recognize your face. It is a concern that your iPhone’s Face ID settings are properly configured and activated for use. To ensure this, go to settings, then Face ID & Passcode.

7 Additional Troubleshooting Steps To Fix iPhone Face ID

1. Reboot Your iPhone

The initial troubleshooting step to fix Face ID is to reboot your iPhone. It will release the memory process and other glitches from blocking teh sensor’s detections. The process of restarting iPhone 11, 12, and 13 is different from previous gens, you need to press multiple buttons to force restart your latest iPhone.

Option1: Simple Restarting Method for iPhone

  1. Press and hold the either volume up button or the volume down button while holding the side button.
  2. You need to hold the buttons until the power-off slider appears on the screen.
  3. Then drag the slider to the end, then wait 30 seconds for your device to turn off.
  4. Now, switch the device back on by pressing and holding the side button until you see the Apple logo.

Option2: Force restart an iPhone with Face ID

Force restart an iPhone with Face ID
Force restart an iPhone with Face ID
  1. Press and quickly release the volume up button
  2. Then press and quickly release the volume down button.
  3. After that press and hold the side button.
  4. When the Apple logo appears, release the button to reboot iPhone.

2. Disable and reEnable Face ID

Disable and reEnable Face ID
Disable and Enable Face ID

It is a simple step that you can turn Off and then turn On your mobile Face ID if your Phone 13 is unable to activate your Face ID at the moment. It happens when your device hasn’t been unlocked for more than 48 hours and the passcode hasn’t been used to unlock the device in the last six days. In such situations, you will see a passcode screen instead of a Face ID. To fix this.

  1. Navigate to your mobile Settings.
  2. Then Face ID & Passcode.
  3. Select the Face ID option.
  4. And turn toggle On and Off.

3. Reset Face ID from Settings

It is a powerful step to rest your Apple Facial ID on your iPhone. It is a necessary step if you still face the problem, then going forward with reset settings for face unlocking is a great choice.

  1. From the Settings.
  2. Tap on Face ID & Passcode.
  3. Then tap on Reset Face ID
  4. Afterward Set up Face ID again.
  5. Check features are enabled in Face ID.

4. Examine Camera Components (Face ID TrueDepth Sensors)

Examine Camera Components (Face ID TrueDepth Sensors)
Examine Camera Components

Apple uses a TrueDepth camera system for Face ID that consists of image sensors, cameras, and a dot projector to create a detailed 3D map of your face with mathematical representations. If your iPhone shows a warning ‘Face ID is Not Available, please try again later.’ It could mean your sensor got busted and to check that we can unscrew iPhone for a detailed view.

Usually, poor screen replacements and unaware display assembly cause such problems. But if your mobile is not gone in any kind of repairs then you should move forward to the next tip and leave these details for those who have opened their iPhones for repairs and fixtures.

  1. When opening the iPhone shell, look for any mishap.
  2. It should be the notch area where the infrared camera and dot projector modules are set.
  3. Look closely to measure damages then carefully examine the front sensor assembly.
  4. Also check the Flood illuminator module, which is located on the earpiece speaker.
  5. There you should be able to see any sort of physical damage due to water or hand drops.
  6. If anything small as flex wire could be damaged Face ID will not work.

5. Factory Reset All Settings and Everything

Factory Reset All Settings and Everything
Factory Reset All Settings and Everything

Resetting is a process that brings the default setting of a device with the removal of data, apps, and settings. If other tips aren’t working out then you can consider resetting all the settings on your iPhone for erasing software glitches and everything else. Even Face ID got glitches when you have a software bug that blocks the sensors to run any facial scans. You can fix that below step guide.

  1. Go to the Settings.
  2. Select General.
  3. Then choose Transfer or Reset iPhone.
  4. Tap on Reset.
  5. Confirm your action when a prompt appears on the screen.
  6. It will erase all content and settings from your iPhone.

6. Check for Security Updates on your iPhone

Check for Security Updates on your iPhone
Check for Security Updates on your iPhone

Updating your Apple iPads and iPhone devices to the latest available iOS versions is the best policy to be safe from glitches and no service issues. It is the possible solution that fixes the Face ID and its bugs. The iOS 14 got many bugs that were fixed with later updates, you can do the same for iOS 15 bugs and wait for the next updates, especially security updates will settle the issues related to the iPhone Face ID function unavailability.

  1. You can check for updates by going to the Settings
  2. Then General and tap on Software Update.
  3. When reached you can select Automatic Updates.
  4. Then turn on Download iOS Updates.
  5. Also, turn on Install iOS Updates.
  6. Your device will start searching for the latest updates and patches to solve issues with security features.

7. Contact Apple Support Service

It is the last stand that can cure errors, and can’t activate Face ID on iPhone. You can contact or take your phone to a nearby Apple store or an Apple-authorized service center to officially examine the cause of the issue and then negotiate possible fixes. At this moment your warranty will save you money and get you the free fixes, otherwise, you have to pay for your expenses.


Now that you’ve learned all of the possible fixes for your iPhone that won’t break the bank, you can easily work around expensive fixtures and repairs by fixing your Face ID error “Unable to activate Face ID on this iPhone,” with the troubleshooting steps and evaluating reference solutions. If you are unable to resolve the issue and there is hardware damage from a recent accident, your iPhone may have busted with TrueDepth sensors, which may cause the software to malfunction, preventing Face ID from working. Believe that software-based solutions and tips will not fix it; instead, go through a proper teardown and repairs from an authorized Apple center, where you can also get a replacement if you have a warranty that covers the damages.

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Kevin Pocock
By Kevin Pocock

Since his early childhood, Kevin Pocock's first love was always electronics. So when he stumbled across, he found a kindred spirit to webmaster his blogger spirit. His enthusiasm for technology as a technophile lives up as strong as ever. A self-professed Gameboy fanatic he is excited about the potential of new gaming platforms like the Nintendo Switch and handheld consoles. When we ask Pocock about his entertainment dream, he said I'm looking forward to playing Zelda on the go.