Auto-brightness toggle is missing from settings. Why?
I recently changed the screen on my iPhone 5, and now the Auto-brightness toggle is completely missing. I can change brightness at will, and there are no other odd behaviors. I have tried reinstalling the screen, swapping out my old camera/sensor assembly and the new one, but that doesn't seem to have any effect.
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Even stranger, it appears to be on. The screen gets dim in dark environments and brighter in bright environments. You can even watch the slider move as it adjusts.
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