iPhone screen dims randomly

Just tried my X without the case and it maybe lasted a bit longer than with the Apple case on before it ‘Auto’ started stepping down the brightness. Defenitly runs a little cooler without the case. Also running IOS 12 so this issue wasn’t fixed in the release like I was hoping. The strange thing is that even when the device is still feeling about the same temperature, sometimes it will start to automatically start stepping the brightness back up. The brightness slider has no effect in returning max actual brightness. I also fly drones with my iPad Pro and X and it’s a real issue trying to see the screen in the sun after the devices start mysteriously auto dimming (despite turning off all the auto dimming functions). The Pro really doesn’t like the direct sunlight and will quickly go into overheat auto shutdown. That one is however a design feature...

This issue is is due to BAD Engineering that causes the display to dim everytime the CPU heats up:

Started with iPhone 6

Continued with iPhone 7 Plus

And still here in my new $1500 iPhone XS Max

You would think they fixed it on the latest phone, but no..... Apple, you need to get to the bottom of this!

This isn't auto brightness I can assure you! This is a sudden drop in screen brightness when the phone heats up, ALL Brightness Settings have been turned off. It has nothing to do with settings, it's just a hardware issue with the CPU or rather the GPU inside of that. I guess it goes into low power mode to not melt when the CPU is under load.... Bad Engineering if you ask me! They should've separated the two to avoid this rather than putting everything on one chip.....

I also have this happening on a brand new iPhone XS Max. I guarantee that I have checked extensively through every possible setting so I wish people would stop responding with that answer.

It's not due to low battery either. If it's due to heat then it's happening when my phone is warm but definitely not too hot and not running 3D games or anything like that!

Apple told me they would swap the phone but I am reluctant to do that after reading previous experiences here.

Hoping for an answer from someone please!!

This happens to me, too, especially while using Waze. It recently went from "irritating quirk" to "dangerous" when I was driving in a crowded and unfamiliar city and suddenly couldn't see my screen. I'm starting to suspect Apple of trying to force us to use the useless Maps app.

This was happening on my old iPhone X and now I have the new iPhone XS Max. I set this phone up as a brand new phone (Not from Backup) and installed all applications from scratch. No true-tone, no-autodimming enabled and no white point enabled and this still persists. This happens often i notice when the CPU is being taxed. I generally am gaming on the phone playing Battle Bay in particular when this happens. Apple Engineers help!

Ok AnthonyAllState, on your iPhone X, you have to the settings app, after that, click General, then click Accessibility. When you click Accessibility, click Display Accommodations and Auto-Brightness is on there and slide the button to the left to turn off your Auto-Brightness and it won't move by itself anymore, glad to help you.

I have the exact same issue, and for those blaming Waze: I don’t even have that app on my phone. Happens seemingly randomly, multiple times a day. It’s infuriating. Restarting the phone does nothing, and like everyone else, I have autobrightness off

Same thing. My brother and I just bought two XS Max’s a few days ago and have turned everything off and are still having this problem. He’s exchanging his phone tomorrow actually.. hoping to have better luck with the replacement..I was going to do the same but after reading this thread, I don’t see a point in doing so. It’s happened to me while browsing the web and sometimes even just texting. Don’t play no games on this phone whatsoever. & Doesn’t happen with a specific app. Just randomly no matter what I’m doing.

There's no way to fix this problem, this is a built in feature.

No matter if you turn off every options related to brightness or color, the phone will continues change the brightness for itself.

The only solution is upgrade to android, I highly recommend the note 9.

There's no way to fix this problem, this is a built in feature.

No matter if you turn off every options related to brightness or color, the phone will continues change the brightness for itself.

The only solution is upgrade to android, I highly recommend the note 9.

There's no way to fix this problem, this is a built in feature.

No matter if you turn off every options related to brightness or color, the phone will continues change the brightness for itself.

The only solution is upgrade to android, I highly recommend the note 9.

Hello apple ,

i have a problem with my Iphone X space grey 256gb .When i use my phone Then after few minutes my screen Brightness Go Dim.my Brightness is in full but Still The screen is dim and Low light.I m a big Fan of apple but If this Type of problem will occur then This is Not fair.spending $1200 and facing this type of silly problem I m not Happy with It.i Hope you read my Problem and Hope you Reply asap .

Thankyou

from

vickey sarraf

There's no way to fix this problem, this is a built in feature.

No matter if you turn off every options related to brightness or color, the phone will continues change the brightness for itself.

The only solution is upgrade to android, I highly recommend the note 9.

None as of yet. Apple seems to be oblivious to it and it looks like other people are saying they have heard that it’s just the design. I think it’s an issue that they need to correct. Would love to know if anyone else has had success with Apple.