My iPhone Face ID isn't working but my front camera works.
Hello my Face ID isn't working but my front camera works
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iPhone 12 Pro Max, iOS 15
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If you see this message on the Home Screen or in Settings, your iPhone or iPad might need an update or service.
You might see the following message on your iPhone X or later, iPad Pro 12.9-inch (3rd generation) or later, or iPad Pro 11-inch (1st generation) or later:
"A problem was detected with the TrueDepth Camera. Face ID has been disabled."
What to do next
- Update your iPhone or iPad to the latest version of iOS or iPadOS.
- Check if there is an issue with Face ID in your iPhone's parts and service history. To do this, open the Settings app, tap General, then tap About.
- If you still can't enroll your face or unlock your device with Face ID, you can take your device to an Apple Store or Apple Authorized Service Provider, or contact Apple Support about your iPhone or your iPad.
Only a trained technician should service your device. Improper repair, modification, or use of nongenuine Apple components in the laser systems might prevent the safety mechanisms from functioning properly and could cause hazardous exposure and injury to eyes or skin.
Also refer to this apple blog If an alert says Face ID has been disabled on your iPhone or iPad Pro - Apple Support for more info