iPhone X iPhone X Display Brightness Issue

borntrouble

macrumors 6502a
Original poster
Jun 4, 2010
516
536
Germany
Hey there,

I've been experiencing an issue concerning display brightness with my iPhone X lately.
I've come to notice that sometimes, when the display brightness is set to maximum, the display automatically and abruptly switches to a darker brightness level.
When I go to control center, it still shows maximum brightness, but it definitely is not the brightest level the display is capable of. This happens regardless of the automatic brightness setting being toggled on or off.
Is this some kind of automatic overheating protection or is my device malfunctioning?

Thanks in advance.
 

upandown

macrumors 6502a
Apr 10, 2017
613
444
It’s working as designed. It’s limiting power to the screen to keep heat and power usage down. It happens more often in warmer ambient temps. All phones work this way to some degree.
 

borntrouble

macrumors 6502a
Original poster
Jun 4, 2010
516
536
Germany
It’s working as designed. It’s limiting power to the screen to keep heat and power usage down. It happens more often in warmer ambient temps. All phones work this way to some degree.
And this is exactly where it happened the most. Thanks!