What are the best places for facial recognition repairs on Apple phones? Let’s talk about it.

Starting from the iPhone Face ID recognition implements 3D face recognition to make identity authentication more secure, but its strict design means that once the Face ID hardware is damaged, the possibility of repair is almost zero. Especially machines that have been soaked in water or dropped, make fruit fans miserable!

The TrueDepth camera for Face ID recognition is a complete camera system, including: depth-sensing infrared lens, distance sensor, floodlight element, ambient light sensor, front camera, and dot matrix projector. In addition to the earpiece and microphone, Apple's bangs are all related to facial recognition. The most critical ones are deep-sensing infrared lenses, floodlight illumination components, and dot matrix projectors.

Apple Face ID recognition is a complex process. First, when the face is close to the phone, the distance sensor is activated. The distance sensor sends a signal to activate the floodlight element, and the emitted infrared light is projected on the face. The reflected image is then received by the infrared camera and sent to the CPU processor to determine whether it is a human face.

Then the dot matrix projector is started to generate about 30,000 light points (structured light) and projected onto the user's face. The array formed by these light points is used to reflect back to the infrared light camera to calculate The distance (depth) of different positions on the face is then sent to the A11 processor. After calculation and comparison, the facial feature recognition is the user's own, and then the face can be unlocked. If there is an error in every step of the recognition, Face ID cannot be completed.

In Xinzhizao query software, (click: Xinzhizao, get VIP membership for free, and get high-definition large pictures) iPhone X face circuit block diagram and timing diagram:

In During actual maintenance, we often receive faulty machines from users that cannot be recognized by Face ID. In particular, the majority of faulty machines are due to water ingress and Face ID cannot be used. In this case, the chance of repair is very small. Many users don’t understand why a small part cannot be repaired, why can’t they just replace it with another one! Face ID recognition and fingerprint recognition are the same, both are bound to the motherboard. If the hardware itself is damaged, it cannot be replaced and repaired separately.

The following will give you a detailed explanation of common fault causes and solutions that cannot be recognized by Face ID.

Fault 1: Judgment and repair of various Face ID fault phenomena in iPhone X system

1. Analysis and repair of prompts to move higher or lower

< p>When this happens, first check whether it is caused by water or a crash.

For machines with water intrusion, focus on checking the water inlet area to see if there is any corrosion, and clean the corroded components. If it's still the same, the face kit is damaged.

2. Click on the face settings and immediately prompt the analysis and repair of the unavailable face

The face ID kit is not working properly. Check whether there is a broken cable or insufficient power supply. .

3. Analysis and repair of stuck recording when entering the facial setting point.

First rule out whether it is caused by the system, and then measure the ground resistance to see if there is any abnormality. Is the power supply normal?

Fault 2: No face repair and repair, no sensor, no photosensitivity caused by the earpiece cable.

This is usually caused by the breakage of the earpiece cable. It can be repaired by replacing the earphone cable.

The front cable is broken

Be very careful when installing the front earpiece cable:

1. Install carefully and do not damage the cable;

2. When installing the earpiece cable fixing screws, be sure to pay attention to the length of the screws. If you install the wrong screws, it will easily damage the screen, resulting in green lines on the screen.

3. When replacing the cable, be careful when desoldering the encryption chip of the distance sensor.