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fongyuen

macrumors 6502
Original poster
Jun 9, 2007
390
2
hey guys, anyone encounter an issue with your iPhone X where in the middle of an activity (usually, it's when playing a game, specifically King of Glory) the brightness will suddenly dim significantly and further attempts to increase/decrease the brightness in control center are completely useless? To regain control of the brightness, I usually need to reboot the phone. Does this have something to do with auto-brightness settings?
 
hey guys, anyone encounter an issue with your iPhone X where in the middle of an activity (usually, it's when playing a game, specifically King of Glory) the brightness will suddenly dim significantly and further attempts to increase/decrease the brightness in control center are completely useless? To regain control of the brightness, I usually need to reboot the phone. Does this have something to do with auto-brightness settings?

Probably because your screen is on full brightness for too long. That’s a safety measure to reduce the chances of burn in.
 
OR the game is overheating the CPU and that plus full brightness . . The phone will protect itself and dim the screen.

It is a protective featur.

Yeah, perhaps, although I rarely play it on full brightness. I'll mess around with it and see I guess.
 
Mine’s the opposite, just now it randomly went full brightened and damn near blinded me. It randomly brightens and has done on my 6s so I think it’s an iOS problem.
 
hey guys, anyone encounter an issue with your iPhone X where in the middle of an activity (usually, it's when playing a game, specifically King of Glory) the brightness will suddenly dim significantly and further attempts to increase/decrease the brightness in control center are completely useless? To regain control of the brightness, I usually need to reboot the phone. Does this have something to do with auto-brightness settings?
It’s normal behavior:
https://mobileinternist.com/iphone-screen-dims-unexpectedly-explanation
 
There is a setting under accessibility that you need to turn off..

Settings - General - Accessibility - Display Accommodations
 
It’s thermal throttling to reduce CPU/GPU heat. Decreasing brightness is one way to help cool the phone off. It kicks back up if you hold it in front of a car AC vent. I’ve even dunked it in the pool
 
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What setting? There isn't a setting to prevent the screen from dimming if it is overheating.

Where exactly did the OP say the phone was overheating? The settings I posted work if the phone screen dims when you think you've turned off auto brightness..

You assumed the OP phone is overheating. Maybe it is and maybe it's not..
 
Where exactly did the OP say the phone was overheating? The settings I posted work if the phone screen dims when you think you've turned off auto brightness..

You assumed the OP phone is overheating. Maybe it is and maybe it's not..
“In the middle of an activity” ... “playing a game”

“Increase/decrease controls ... useless”

Those are all symptoms of overheating. Auto brightness does not make control center controls useless. It’s not an assumption. It seems, you didn’t read the OP. This is not an auto brightness issue.
 
“In the middle of an activity” ... “playing a game”

“Increase/decrease controls ... useless”

Those are all symptoms of overheating. Auto brightness does not make control center controls useless. It’s not an assumption. It seems, you didn’t read the OP. This is not an auto brightness issue.

If you say so... But assume away since the OP said NOTHING about the phone overheating.. I get it it's MR where some need to impress with their expert knowledge............................................

Like I said, maybe it was overheating but the OP said nothing to that.. I simply added what might also be a cause and the self proclaimed 'experts' scoffed at it.. Anyways, expert onward I suppose.. LOL
 
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