Yes — permanently. The proximity sensor is cryptographically paired to the iPhone 14 Pro Max logic board at the factory. Replacing it with any other component, even an identical PULL-A original Apple part, breaks that pairing.

After replacement, Face ID will no longer function and True Tone will also be lost. The passcode lock continues to work normally.

This is not fixable after the fact. Apple's proprietary System Configuration software is the only tool that can re-pair sensors — it is not available outside Apple service centres.

No. The flash module is on the same flex cable assembly but is not part of the Face ID pairing system. Replacing the flash LED module does not affect Face ID or True Tone.

If the only fault is a non-working flashlight or camera flash, replacing the flash section is the safer repair — no biometric functionality is at risk.

No micro-soldering is required for the flash module replacement.

PULL-A means the component was removed from a working or lightly used iPhone 14 Pro Max device. It is an original Apple part — not a copy, not a replica.

PULL-A grade specifically means the part was tested for full functionality before removal and shows minimal wear. It is the highest quality of pulled component.

Aftermarket parts are manufactured to Apple's dimensions but by third-party factories. Proximity sensors and ambient light sensors are particularly prone to calibration issues when aftermarket — PULL-A originals perform more reliably in this position.

Starting with the iPhone 14 Pro series, Apple moved the proximity sensor under the display. Infrared light transmits through the active display pixels themselves rather than through a dedicated notch cutout.

This makes the sensor position more sensitive during installation. Any obstruction — dust, a misaligned gasket, debris — between the sensor housing and the display panel can cause proximity detection failure even with a functional new part.

Technicians working on this repair should ensure the sensor seating area is clean and that the flex cable is routed correctly before reassembly.

Not always. Before ordering a replacement part, rule out software causes first. Go to Settings → General → Reset → Reset All Settings. This can resolve proximity sensor faults caused by iOS bugs without opening the device.

Also check if a thick screen protector is covering the Dynamic Island area — this can block the under-display sensor and cause exactly this symptom.

If the fault persists after a software reset and with no screen protector obstructing the sensor area, a hardware replacement is the next step.

Yes. The ambient light sensor is part of this same flex cable assembly. When it fails, auto-brightness stops responding to environmental light changes.

First confirm auto-brightness is enabled: Settings → Accessibility → Display & Text Size → Auto-Brightness. Toggle it off, then on again. Also check if the Dynamic Island area is being obstructed by a case or screen protector edge.

If it remains unresponsive after those checks, the ambient light sensor in this assembly is the likely fault.

Professional installation is strongly recommended. The iPhone 14 Pro Max uses strong adhesive bonding and requires heat to soften the display seal. Precision screwdrivers, spudgers, and tweezers are needed.

The UDPS position is more sensitive to installation accuracy than older notch-based sensors. Misalignment during reassembly can cause the same fault you started with — even with a working new part installed.

Flash module replacement is more straightforward than proximity sensor replacement. Both require opening the device. If you are not confident, bring the part to a local repair shop along with this part.

No. This is a hardware repair part sold as-is for professional or advanced DIY use. No manufacturer warranty is included.

Every component is pre-tested for functionality before shipping. Australian Consumer Law protections apply to all purchases from JPC Mobile.

If the part arrives damaged or not as described, contact us at 0480 039 913 or visit Shop 3A, Forest Lake QLD.

You will need a Phillips precision screwdriver set, pentalobe screwdrivers (for the bottom screws), plastic spudgers, prying tools, fine-point tweezers, and a heat source (heat gun or hair dryer) to soften the display adhesive.

A suction cup or opening pick is also required to separate the display from the chassis. A magnetic mat helps keep small screws organised.

JPC Mobile stocks professional iPhone repair tool kits. Visit the repair tools collection or ask in store at Shop 3A, Forest Lake QLD.

Flash module only: 30–45 minutes for an experienced technician. Proximity sensor only: 45–90 minutes. Combined replacement: 60–120 minutes.

The iPhone 14 Pro Max uses strong adhesive bonding on the display. Allow time for the heat process to work properly — rushing this step is the most common cause of cracked display glass during DIY repairs.

Calibration testing after proximity sensor replacement may add additional time to verify sensor detection is functioning correctly at the correct distance.