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Released November 4, 2017. Model A1865, A1901. Available as GSM or CDMA / 64 or 256 GB / Silver or Space Gray. (Pronounced the same as "iPhone 10.")

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iPhone X Face ID issue

Hello everyone, I would like to ask for some help. ?

I have repaired an iPhone X with FaceID issue, it was showing problem with the true depth sensor. I replaced the dot projector flex, the i2C programmer shows OK. After installing it in the phone I was able to set up FaceID and I could unlock the phone a few times. Then it suddenly stopped working and when I try to set an alternative face the setup begins but after 3 seconds it freezes and shows the error FaceID is not available. After a few minutes it worked again but the issue reoccures over and over. I was thinking that the earspeaker flex may have been damaged so I took a known good flex and resoldered the flood illuminator. It worked again a few times but the problem came back again. Anyone got some ideas? Could it be a logic board issue? Thanks in advance!

Answer this question I have this problem too

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I would make sure that the plate, holding the ribbon cable to the motherboard is secure and is not letting the flex cable release due to vibrations caused by using device. Other than that, it could also be that the sensors are not secured to the display properly, causing them to slowly slip out of the display windows, blocking either the dot projector, or the IR receptor. This would explain it working a few times, then suddenly ceasing to work.

Hope this Helps!

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2 Comments:

I tried to eliminate your second idea by testing the FaceID with the screen lifted aside so it could have a clear view of my face, but unfortunately it did not solve the issue.

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@Bence Püski You could also try cleaning the IR projector and sensor, dust/oil may be preventing them from firing/receiving Infared light. Sorry my other solutions didn't work. Good luck!

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Bence Püski will be eternally grateful.
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