How do I reactiveted my Face ID

This is generally a hardware issue. If the unit's on an OS version older than 16.7.1 or 17.0.3, you might be able to fix it by updating it from a computer or the Software Update function in Settings; otherwise, contact Apple Support.

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Lovelly_34 Said:

"How do I reactiveted my Face ID: I would like to reactivate my Face ID but it wouldn’t let me do it I think i need y’all help"

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Troubleshooting Face ID:

Overview these two links:

• If an Alert Says Face ID has been Disabled on your iPhone or iPad Pro - Apple Support

• If Face ID isn't Working on your iPhone or iPad Pro - Apple Support