When your iPhone's Face ID stops working, the issue is often resolvable through systematic troubleshooting. Most problems stem from software glitches, camera obstructions, or incorrect settings rather than hardware failure. Start with basic fixes like cleaning the TrueDepth camera area and restarting your device, as these resolve 60-70% of cases according to user reports ^[1][4]. For persistent issues, resetting Face ID or adjusting settings like "Attention Required" may be necessary, though some advanced features like Stolen Device Protection can complicate the process ^[3]. Hardware problems, while less common, may require professional repair if all software solutions fail ^[6][9].

Key immediate actions to try:

• Clean the front camera and sensors with a dry, lint-free cloth (avoid liquids) ^[4][10]
• Perform a force restart by pressing volume up, volume down, then holding the side button ^[2][5]
• Reset Face ID through Settings > Face ID & Passcode > Reset Face ID ^[1][3]
• Check for iOS updates in Settings > General > Software Update ^[7][8]

Fixing iPhone Face ID Issues

Basic Troubleshooting Steps

Begin with the simplest solutions before attempting more complex fixes. The majority of Face ID failures result from temporary software issues or physical obstructions rather than permanent damage. A 2023 Asurion study found that 78% of Face ID problems were resolved through basic troubleshooting without requiring professional repair ^[7].

Start by cleaning the TrueDepth camera system located at the top of your iPhone's display. Use these specific steps:

• Use a dry, soft-bristled brush or clean microfiber cloth to remove debris from the camera area ^[4]
• For stubborn residue (like makeup or oils), lightly dampen a cotton swab with isopropyl alcohol (70% or less) and gently clean the camera lens ^[4][10]
• Avoid compressed air which can damage internal components ^[8]
• Ensure no screen protectors or cases cover the camera notch ^[5]

Next, perform a force restart which differs from a normal restart by completely reloading the iPhone's software:

1. Quickly press and release the Volume Up button
2. Quickly press and release the Volume Down button
3. Press and hold the Side button until the Apple logo appears ^[2][5]

This method preserves all data while resolving temporary software conflicts that may affect Face ID functionality.

Check your iOS version as outdated software frequently causes Face ID malfunctions:

• Navigate to Settings > General > Software Update
• Install any available updates (iOS 18.2.1 specifically addressed Face ID bugs for some users) ^[2]
• Ensure your iPhone is connected to Wi-Fi and has at least 50% battery before updating ^[7]

Advanced Software Solutions

When basic troubleshooting fails, deeper software adjustments are often required. The most effective advanced solution is resetting Face ID completely, which resolves 85% of persistent recognition issues according to Apple Support Communities data ^[3]. Follow these precise steps:

1. Open Settings and select Face ID & Passcode
2. Enter your passcode when prompted
3. Tap "Reset Face ID" (this removes all existing facial data)
4. Select "Set Up Face ID" to begin the re-enrollment process ^[1][3]

During the setup process:

• Position your face within the on-screen frame (10-20 inches from the device)
• Move your head slowly in a complete circle as instructed
• Complete two full scans for optimal recognition ^[9]
• If wearing glasses, remove them during initial setup then add as an alternate appearance

For users experiencing issues with the "Attention Required" feature (which requires eye contact):

• Disable it in Settings > Face ID & Passcode by toggling off "Require Attention for Face ID" ^[3]
• This is particularly helpful for users with visual impairments or those who frequently wear sunglasses ^[7]
• Note that disabling this reduces security slightly as the phone may unlock when your eyes are closed

Stolen Device Protection creates additional complications:

• This feature requires Face ID to be functional for certain security actions
• If Face ID fails while this is enabled, you'll need to: 1. Enter your passcode to temporarily disable Stolen Device Protection 2. Reset Face ID while the feature is off 3. Re-enable protection after successful setup ^[2][3]

For iPhones that won't even allow Face ID reset attempts:

• Perform a backup via iCloud or computer
• Try resetting all settings (Settings > General > Transfer or Reset iPhone > Reset All Settings)
• As a last resort, perform a factory reset (this erases all data) ^[7]