Face ID Not Working on iPhone After iOS 18 Update? Here’s What to Do!

Apple's iOS 18 update brought exciting new features and improvements, but for some users, it also introduced an unexpected problem - Face ID not working. If you're finding that your iPhone no longer recognizes your face, fails to unlock, or won’t authorize app logins and payments, you're not alone. This issue is more common after major software updates, and while it can be frustrating, there are several practical ways to fix it. 

Follow this step-by-step guide to fix Face ID on your iPhone. If you still experience issues, iFixScreens offers quick diagnostics and reliable repairs.

Key Takeaways

• iOS 18 may cause Face ID disruptions due to bugs, settings changes, or camera issues.
• Cleaning, restarting, or resetting Face ID usually resolves it.
• Minor iOS patches can quickly fix Face ID glitches.
• For unresolved issues, professional help from iFixScreens or Apple is recommended.

1. Clean the TrueDepth Camera and Check for Obstructions

Face ID relies on the TrueDepth camera to scan your face. After the update, some settings may have reset, and even minor dirt or screen protectors can interfere.

• Make sure the camera area is clean and not covered by a case or screen protector.
• Wipe the front camera lens gently with a soft cloth.
• Ensure you're holding the phone at a proper distance and angle for Face ID to work.

If Face ID still isn’t working, physical obstructions or dirt could be the cause, and cleaning often solves the issue. However, if your iPhone’s camera or Face ID hardware appears damaged - such as after a drop - iFixScreens provides professional inspection and repair services for Face ID and camera-related problems.

2. Restart Your iPhone

A simple restart can resolve many software glitches caused by an update:

• Press and hold the side button and either volume button.

• Slide to power off, wait a few seconds, and power the phone back on.

Sometimes iOS needs a fresh reboot to apply certain changes correctly.

3. Update to the Latest iOS 18 Patch

Apple regularly releases smaller patches after a major iOS release to fix bugs:

• Go to Settings > General > Software Update.

• If a newer version (e.g., iOS 18.0.1 or 18.1) is available, install it.

Minor updates often contain fixes for Face ID and other system issues. If your issue started after updating, a quick patch could resolve it.

4. Reset Face ID and Set It Up Again

Sometimes, Face ID settings or face data may become corrupted during a system update.

• Go to Settings > Face ID & Passcode.

• Tap Reset Face ID, then Set Up Face ID again.

• Follow the instructions to scan your face in well-lit conditions.

Make sure you’re not wearing sunglasses or anything that may obstruct your facial features during the scan.

5. Double-Check Your Face ID Settings

Sometimes Face ID settings may be turned off after an update:

• Go to Settings > Face ID & Passcode.

• Make sure options like iPhone Unlock, iTunes & App Store, and others are enabled.

• If you're using Face ID with third-party apps, ensure they are updated and allowed to use Face ID.

6. Disable ‘Require Attention for Face ID’ (Optional)

If Face ID is slow or not recognizing your face consistently:

• Go to Settings > Accessibility > Face ID & Attention.

• Toggle off Require Attention for Face ID.

This makes Face ID less strict about your gaze direction, which might help if your issue is related to attention sensitivity.

7. Reset All Settings (If Nothing Else Works)

This won’t erase your data but will reset settings like Wi-Fi passwords and wallpaper:

• Go to Settings > General > Transfer or Reset iPhone > Reset > Reset All Settings.

This can resolve any system conflicts without a full factory reset.

8. Consider a Hardware Check

If software solutions don’t fix the issue, your iPhone’s Face ID may have a hardware problem - especially if it’s been dropped or exposed to moisture. That’s where iFixScreens can help. With stores nationwide, including your nearest iFixScreens store, we offer professional hardware diagnostics and reliable Face ID repairs, often at a lower cost than Apple’s out-of-warranty service.

9. Contact Apple Store or a Trusted Repair Center

Still Experiencing Issues?

• Try using the Apple Support app or visit your nearest Apple Store for help.
• For faster service or out-of-warranty repairs, iFixScreens offers a convenient alternative with expert technicians and quick turnaround times.

Final Thoughts:

Face ID not working after the iOS 18 update can be frustrating, but in most cases, the The issue is temporary and fixable. Whether it's a hardware problem, a small bug, or a settings error, the steps mentioned above should help you identify the cause. 

Additionally, if you find that nothing works, professional repair services like iFixScreens can help you save time and prevent the hassle of mailing in your device. Always keep your phone safe, clean, and updated to avoid future issues.

FAQs

Q. What disables Face ID on iPhone?

A. Face ID can be disabled due to a dirty camera, system glitches, low battery, recent restarts, or settings being turned off. Physical damage or Face ID not being set up properly can also disable it.

Q. Why is my Face ID not working after the iOS 18 update?

A. The iOS 18 update may have caused a bug, changed Face ID settings, or created a temporary software issue. A restart or re-setup usually fixes it.

Q. Why is my iPhone Face ID suddenly not working?

A. It could be due to a blocked or dirty camera, system glitch, software update, or hardware damage from a drop or water exposure.

Q. How do you turn on Face ID for Messages in the new iOS 18 Update?

A. Go to Settings > Face ID & Passcode, enter your passcode, and make sure Messages or iMessages is enabled under "Use Face ID For" if the option is available.