Chosen Solution

This is the 4th iPhone X on which I replaced the back glass by using the heat gun after removing the rear camera and main board/ motherboard so that it won’t get damaged due to overheating. Now I assembled it back and the phone started fine. After starting it displayed an error, “face id is not available". I checked camera app but camera screen will just remain black on both cameras front and rear. Flashlight is not turning on either. I disconnect and connected everything, no luck and inspected both camera and face id for damage, nothing found. I tried testing the device, no luck. Please help and advice.

Hi Rocky, I’m not sure this will help, but I ran into the same situation with a chassis swap. Daughter-in-law basically destroyed the front and back of her phone and bent the frame, so I bought parts and built a full chassis minus the three Face ID components; motherboard, front camera assembly and earpiece/sensor assembly. When I switched the parts over, everything worked except for the exact same things you ran into; no Face ID and front and rear cameras black (I never tested the flash). I tried every software solution I could find online or think of, with no luck, so I turned to hardware. Having several spare parts lying around, I did enough part swapping to find that when I changed out the front camera assembly, suddenly everything started working - minus the Face ID, of course. I still have the non-working camera assembly, and when I have another functional motherboard (the ones I have are all iCloud locked), I hope to figure out exactly which one of the three components of the assembly (IR camera, front camera or dot projector) is causing the problem and determine if it can be fixed or not, perhaps by changing out a flex cable or something. My plan is to leave the existing camera assembly in place and plug in each of the components one at a time to identify which one is causing the problem. I always use a magnetic screw mat specific to the phone I’m working on and am meticulous about ensuring the screws go back in the proper place, so I’m very confident there was no screw damage and don’t believe you have any either. I probably won’t get a chance to work on this until next week (waiting for parts), but I’ll keep you updated if/when I make any progress.

I would try a hard reset, I believe you hit the up volume then the down volume then the sleep/power button but hold it until the apple logo comes up. Try it and see if that will help. Did you also remove the front camera front the case also? Update (05/09/2020) It’s highly likely that you damaged the camera and cables, they can’t take that kind of heat. Also did you put the screws in the motherboard back into the exact same position. It takes different lengths of screws and if you put the wrong screw in the wrong hole you can get long screw damage.

this picture is what it looks like with long screw damage.

this is what it looks like during the repair of long screw damage. It goes into the layers of the board and damages the traces. You have to scrape the board back and run jumper wires to repair it. I would check all of the holes for long screw damage and check the camera and cables.

Hi bro. did you already found the solution for this?