Overview
Face ID is Apple's most secure and convenient biometric authentication system, relying on a sophisticated TrueDepth camera array of sensors and projectors in the top bezel of the iPhone. Because this system is hardware-dependent and cryptographically paired to the logic board, any physical damage to the TrueDepth camera — or a screen replacement that damages its flex cable — can permanently disable Face ID.
Common Causes
- Physical impact from a drop damaging the TrueDepth dot projector or flood illuminator in the top bezel
- Screen replacement that severed or damaged the Face ID flex cable running from the display to the sensor
- Water damage corroding the Face ID sensor contacts or the proximity sensor within the same module
- iOS software bug causing Face ID authentication to fail despite working hardware
- A face mask, sunglasses, or unusual lighting condition preventing sufficient facial data capture
- The TrueDepth camera hardware being obstructed by a screen protector covering the bezel sensors
Signs & Symptoms
- Face ID option is completely greyed out and unavailable in Settings
- Face ID prompts appear but always fail to authenticate even with the correct face
- iPhone displays "Face ID is not available" or "Face ID requires attention" error messages
- Face ID was working before a screen repair and stopped immediately after
- Setting up Face ID fails partway through with an error about the camera being unavailable
Should You Try DIY?
Attempting to repair iPhone Face ID without proper tools and training can cause permanent damage. Face ID sensors are cryptographically paired to the logic board — any unauthorised replacement of the sensor module will result in permanent Face ID loss. Always consult a professional technician.
Professional Solution
iTech Repairs technicians are trained to preserve the original Face ID flex cable and TrueDepth sensor during any screen or housing repair. Where the sensor itself is physically damaged, we carry out the repair under assessment conditions that protect the cryptographic pairing to the logic board wherever possible. We advise honestly on what is recoverable before any work begins.
How Much Does It Cost?
Face ID repair at iTech Repairs is assessed individually after a free diagnostic. Call us or walk in for a free assessment and no-obligation quote.
Repair vs Replace
If your iPhone is more than 4 years old and the repair cost exceeds 50% of the device's value, replacement may be worth considering. Our technicians can advise you after a free diagnostic.
Why Choose iTech Repairs?
iTech Repairs in Braybrook and Spotswood offers walk-in Face ID repair service with no appointment needed. Cheapest price guaranteed, lifetime warranty on all repairs, 15-minute on-the-spot service where possible.
Frequently Asked Questions
- Why is Face ID not working on my iPhone?
- Face ID failure is most commonly caused by a drop damaging the TrueDepth camera sensor on the front of the phone, a screen replacement that severed the Face ID flex cable, or an iOS software glitch. Hardware damage is the most frequent cause.
- Can a screen replacement cause Face ID to stop working?
- Yes. Low-quality screen replacements that do not preserve the original Face ID flex cable will permanently disable Face ID. iTech Repairs always preserves the original Face ID components during screen repairs.
- How much does Face ID repair cost in Melbourne?
- Face ID repair at iTech Repairs is assessed case by case as it involves specialist sensor components. Walk in for a free diagnostic and quote.
- Can a software reset fix Face ID?
- If Face ID is grayed out due to an iOS glitch, resetting Face ID in Settings > Face ID & Passcode and re-enrolling can help. If it remains grey or shows an error, the hardware sensor is damaged and needs repair.