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Provider: Pro-Logic Technologies, Kangari Building, Nairobi
"Face scanner" — also referred to as face unlock, facial recognition, or Face ID depending on the platform — uses the front camera system to verify the user's identity by analysing facial features. There are two distinctly different technologies behind this feature, and they differ dramatically in repair complexity and cost.
Basic face unlock (most Android devices) uses the standard front camera and software to match a stored facial image. It is convenient but not cryptographically secure — it can sometimes be fooled by a photograph.
Secure facial recognition (Apple Face ID on iPhone X and later; Samsung's Intelligent Scan on select flagships) uses a structured light or time-of-flight system with an infrared camera, dot projector, and flood illuminator to create a precise 3D map of the face. It is hardware-secured, cryptographically anchored to the device, and is the most complex front-facing sensor system in consumer smartphones.
Symptoms of Face Scanner Failure
- Face unlock prompts but never succeeds, despite correct face and good lighting
- "Face ID is not available" error message (iPhone)
- Face scanner was working and failed after a drop or front screen replacement
- Device requires PIN entry every time — biometric unlock completely absent
- Face scanner works intermittently depending on lighting conditions (may be a software issue)
Estimated Face Scanner Repair Costs in Nairobi (2024–2025)
| Scanner Type / Device | Parts (KES) | Labour (KES) | Total Estimate (KES) |
|---|---|---|---|
| Basic Android face unlock — front camera only | 400 – 2,000 | 500 – 1,100 | 900 – 3,100 |
| Samsung Intelligent Scan — IR sensor assembly | 2,000 – 6,000 | 1,000 – 1,800 | 3,000 – 7,800 |
| iPhone Face ID — TrueDepth full assembly (X–XS Max) | 6,000 – 14,000 | 1,500 – 2,500 | 7,500 – 16,500 |
| iPhone Face ID (11 through 13 series) | 7,000 – 16,000 | 1,800 – 2,800 | 8,800 – 18,800 |
| iPhone Face ID (14 through 15 Pro series) | 8,000 – 20,000 | 2,000 – 3,500 | 10,000 – 23,500 |
Apple's Face ID system is paired to the logic board at the chip level. Replacement components must be Apple-authorised or installed via Apple's repair programme to fully restore Face ID. Non-authorised replacements will restore the camera image but Face ID will remain disabled.
The Pairing Constraint
This is the single most important thing to understand about Face ID repair: no independent repair shop in Kenya — or anywhere else in the world — can restore Face ID functionality using aftermarket parts. Only Apple and Apple Authorised Service Providers can perform the chip pairing that restores Face ID post-replacement. If Face ID is critical to your workflow (Apple Pay, banking apps, app authentication), factor this into your repair decision before committing to any independent repair.
Pro-Logic Technologies at Kangari Building, Nairobi provides a full explanation of Face ID pairing limitations before undertaking any front camera or TrueDepth system repair on iPhones.
