The source of the part is the issue with display replacements:
- A virgin display from the back of the factory won’t have its firmware installed as Apple does this at the point of system assembly, so it won’t have a working camera.
- A used display will have the firmware, but TrueTone won’t work (at least that is what we have seen with the M1 models).
- Getting the display from Apple gets you access to the paywalled calibration tool so all of the system is calibrated.
As far as the angle sensor reusing it when you replace the display is not an issue. If you are replacing it as it was damaged we hit the same issues like I expressed with the display.
Now here’s an interesting tidbit I haven’t verified yet! Let’s say you get a used display and you ordered a replacement angel sensor from Apple at that point you’ll gain access to the calibration tool, I was told the display will be recalibrated with the new sensor at which point regaining TrueTone. If you do this let us know! As that would be a way around Apples lockout.
So here’s the self repair site to order the needed parts, first referencing the online service manuals also linked within the site Apple Self Repair Store
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