Can iPhone X Face ID still work after repair?

To get a bigger screen, Apple removed the Home button from the iPhone X screen and replaced the Touch ID with a Face ID. The hardware setup for Face ID is called “TrueDepth Camera System”, it includes an infrared camera, ambient light sensor, front facing camera, dot projector, proximity sensor and others, it can be shown as the picture below. We all know that iPhone 7 Touch ID will not work after replacing it, here we will test whether the iPhone X Face ID still works after replacing the hardware.

iphonex-frontsensors

Test 1. Replace the front facing camera assembly

Step 1. We go to Settings > Face ID & Passcode > Set up Face ID to set up a Face ID and test the unlock function, it unlocks the device quickly.

Step 2. Tear down the iPhone X > replace the original front facing camera assembly with aftermarket part > install the screen > boot up and test the Face ID. Our test result is that we can’t set up a Face ID on the device. We also tested the front camera, it works well.

Step 3. To make sure our test result right, we repetition the step 2, this time we replace back to the original parts. The Face ID can be set up successfully and unlock quickly.

The front facing camera assembly includes an infrared camera, front camera and dot projector. As the mounting brackets are welded together by the laser spot welding technology, they are hard to tear down. Here we will dismantle with much force.

The infrared camera and front camera can be taken out easily with pliers. While the dot projector can only be removed after heating with a heat gun. The temperature we set is 150 degrees. Be careful when dismantling the dot projector. Here are the front facing camera assembly parts.

Front facing camera assembly

Here is our test conclusion, after replacing front facing camera assembly, the front camera worked well but Face ID failed. The infrared camera and dot projector as the main parts of Face ID system are tied to the unique logic board inside each iPhone X.

Test 2. Replace the sensor flex cable and ear speaker

Step 1. Tear down the iPhone X > replace the sensor cable and ear speaker with an aftermarket part > install the screen > boot up and test the Face ID. The test result is that the Face ID can’t read. We also tested the ear speaker, proximity sensor and ambient light sensor function. Our test result is that the ambient light sensor not works while the proximity sensor and speaker still work.

Step 2. To make sure the test result right, we repetition the step 1, this time we replace back to the original sensor flex cable and ear speaker. There is an interlude in our test, some dust was found on the screen which leads to the Face ID can set up but fails to unlock the device. After cleaning it with a clean cloth, the Face ID unlocks successfully.

The sensor flex cable is welded to the ear speaker and can be dismantled with a spot welder.

Tear down Sensor cable and ear speaker

Here is the test conclusion, after sensor flex cable and ear speaker was replaced, the proximity sensor and ear speaker worked well but light sensor and Face ID failed. Ambient light sensor, proximity sensor, and flood illuminator are integrated on the sensor flex cable. The flood illuminator works with the Face ID system and is tied to the unique logic board inside each iPhone X, so it failed after replacing.

All the aftermarket parts we used are disassembled from another iPhone X.

To know more details about our test result, please watch our video here:

Any questions and suggestions about iPhone please welcome to comment below.

  1. BY Amir
    |

    hi,
    Thanks for good review and video. I did repair (screen replacement) on several iPhone X and for all of them everything works fine but the ambient light sensor! Face ID, speaker, proximity sensor all of these work perfectly fine but auto brightness does not work on any of my repaired phones! I checked it multiple time, cleaned the sensor but did not work. brightness level is stocked on the middle and the screen is very dimmed unless I turn off the auto brightness and restart the phone to get a shiny bright screen again.
    Do you have any suggestion about this problem?

    Thanks

    • BY kaye
      |

      Our suggestion is that:1. check the sensor flex cable and make sure it is in good condition. 2.check whether the white filter of the ambient light sensor is still on it.

    • BY kaye
      |

      Hi Amir, which parts did you replace? In our video, we replaced the sensor flex cable and the ambient light sensor fails to work.

LEAVE A REPLY

©2016 ETrade Supply Blog All Rights Reserved

successSuccessfully submitted!
Thanks for your suggestion!