Face ID Not Working After Screen Replacement
Face ID Not Working After Screen Replacement? Here’s Why
Face ID Not Working After Screen Replacement? Here’s What You Should Know
If your Face ID stopped working after replacing your iPhone screen, you’re not alone. This is a common issue, especially if the repair was done by a third-party technician.
Face ID is connected to sensitive hardware components. Even a small mistake during screen replacement can affect it.
Let’s understand why this happens and what you can do.
Why Does Face ID Stop Working After Screen Replacement?
Common reasons include:
- Damaged Face ID sensor during repair
- Disconnected flex cable
- Non-original screen replacement
- Improper installation
- Internal component misalignment
Important: Face ID is linked to your iPhone’s logic board. It cannot simply be replaced like a normal part.
1. Restart Your iPhone
 |
| Restart iPhone |
Sometimes the issue is temporary.
For iPhone 8 and later:
- Press Volume Up
- Press Volume Down
- Hold Side button
- Release at Apple logo
After restart, test Face ID again.
2. Check Face ID Settings
Go to:
Settings → Face ID & Passcode
Make sure:
- Face ID is turned on
- Attention features are enabled
- Face ID is set for unlocking
If it shows “Face ID not available,” continue below.
3. Reset Face ID
 |
| Face ID |
Go to:
Settings → Face ID & Passcode → Reset Face ID
Then set it up again.
If setup fails, it may indicate hardware damage.
4. Update iOS
Sometimes Face ID stops working due to a software glitch after repair.
Go to:
Settings → General → Software Update
Install the latest stable version if available.
5. Check for Warning Messages
Go to:
Settings → General → About
If you see a message like:
“Unable to verify this iPhone has a genuine Apple display”
It may indicate compatibility limitations with the replacement screen.
6. Was the Repair Done by an Authorized Service Provider?
Face ID components are delicate and paired to the logic board.
During screen replacement:
- The front sensor assembly must be transferred carefully
- Damaging the infrared camera or dot projector can disable Face ID permanently
If the repair was not done carefully, the sensor may be damaged.
7. When Is Face ID Permanently Disabled?
Face ID may not work if:
- The dot projector is damaged
- The infrared camera is broken
- Water damage affected the sensor
- Flex cable was torn during repair
In many cases, these components cannot be replaced individually.
Can Face ID Be Repaired?
It depends on the damage.
- Loose connection → Sometimes fixable
- Minor installation error → Possibly repairable
- Sensor damage → Often requires advanced repair
It’s best to visit a qualified technician for inspection.
Frequently Asked Questions
Why did Face ID stop working after screen repair?
Because the Face ID system is closely connected to the display assembly.
Can software fix this issue?
Only if it’s a glitch. Hardware damage requires repair.
Is this covered under warranty?
If repaired by an unauthorized provider, warranty may not apply.
Final Thoughts
If Face ID stopped working after screen replacement, the issue is usually related to hardware handling during repair.
Start with simple steps like restart, reset Face ID, and update iOS. If the problem continues, professional inspection is recommended.
Face ID components are delicate and require careful installation.
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