After replacing the front camera/sensor/speaker cable, everything works. But I could not get the AMBIENT LIGHT SENSOR to work.
The AUTO BRIGHTNESS ON/OFF TOGGLE under DISPLAY ACCOMODATIONS is GONE.
I can only MANUALLY adjust the setting. It’s really annoying and disappointing.
Even after resetting the iOS Settings, the TOGGLE is still gone.
In my situation the Y screw behind the Home/Fingerprint Button seems to be GLUED ON by design to prevent inexperienced non-certified Apple replacers to remove it. So what I did was left it on to prevent stripping the screw and breaking the button. I just CAREFULLY BENT the metal bracket AT AN ANGLE so that I can maneuver the whole assembly into the hole of the screen and remove it.
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