I tested my new iphone 12 pro from week 49 again, and at the boot up there is no flickering, but when i watch the black youtube video or a black image it starts to glow. what does this means now?
and really hilarious, if i put my screen brithness at 100% and open a black pic it start to glow grey.
i could not make a video of that because it does not adjust in die end the black level so you can't see the glow. but i made some pictures
Edit: Auto-Brightnes is off
Edit: I found the error, the image i used was not really black so this was my fault

So I choose the black background from iphone 12pro, then i took a screenshot, cut the middle to get a pure black image. if i open this on the iphone 12pro with a brightness under 50% it starts to glow green,
with 100% brightness its really black and you see nothing.
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