Overview
Face ID problems range from occasional failed scans to a 'Face ID is not available' message. Most are down to how you're holding the phone, a blocked sensor, or settings — all quick to fix. This guide covers the everyday recognition issues first, then the deeper 'unavailable' error.
Symptoms you might see
- Face ID fails to recognise you and falls back to the passcode.
- A 'Face ID is not available. Try setting up Face ID later.' message.
- It only works at certain angles or in certain lighting.
- Face ID stopped working after a screen repair or a drop.
Possible causes
- The TrueDepth sensor is blocked by a case, screen protector, dirt or a finger.
- You're too close, too far, or holding the phone at an extreme angle.
- Your appearance has changed significantly (glasses, mask, new look).
- A software glitch, or Face ID disabled after failed attempts.
- Hardware damage to the TrueDepth camera after a drop or non-genuine repair.
Step-by-step troubleshooting
Work through these in order — the earliest steps are the safest and fix the most cases.
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Clean the TrueDepth camera
Wipe the notch/Dynamic Island area at the top of the screen with a soft cloth. A smudge, sticker or a heavy screen protector over the sensor can stop Face ID from seeing you.
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Check how you hold the phone
Hold it 25–50 cm (10–20 inches) from your face in portrait orientation, with nothing covering the top sensors. Make sure your eyes, nose and mouth are visible and not blocked by a hand or the edge of a case.
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Confirm Face ID is enabled
Go to Settings › Face ID & Passcode and check that Face ID is set up and that iPhone Unlock is on. Enter your passcode when prompted.
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Set up an Alternate Appearance
In Settings › Face ID & Passcode, tap 'Set Up an Alternate Appearance' to give Face ID a second reference — useful if your look varies (glasses on/off, different styles).
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Reset Face ID
Choose 'Reset Face ID', then set it up again slowly, moving your head in a full circle to complete both scans in good, even lighting.
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Restart and update
Restart the phone to clear temporary glitches, then install any pending iOS update — Face ID bugs are sometimes patched in software.
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Consider hardware service
If Face ID says 'not available' and won't set up — especially after a drop or a third-party screen repair — the TrueDepth system may be damaged. This requires professional diagnosis, as the sensor is tightly paired to the device.
Before you go further: back up your iPhone to iCloud or a computer whenever possible. Steps that could affect your data are clearly flagged — and for suspected hardware faults, a qualified repair professional is the safest next step.
Prevention tips
- Use a case and screen protector that leave the top sensor area clear.
- Keep the front camera area clean and unobstructed.
- Set up an alternate appearance if your look changes often.
- Have screen repairs done carefully, as they can affect Face ID hardware.
Frequently asked questions
Why does my iPhone say 'Face ID is not available'?
This usually points to a hardware issue with the TrueDepth camera, often after a drop or a non-genuine screen repair. Try restarting and updating first; if it persists, the sensor likely needs service.
Can a screen protector stop Face ID from working?
A protector that covers or distorts the top sensor area can interfere. Make sure it's cut correctly and doesn't obstruct the notch or Dynamic Island.
Related guides
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