iPhone 12 pro max keeps dimming

I have the iPhone 12 Pro Max and it constantly dims. I made sure the Automatic button was off, it still dims. I went to answer the phone and it had dimmed itself down to an almost completely dark screen. I am constantly having to reset the brightness back to where I can see the screen. Any "bright" ideas?

iPhone 12 Pro Max, iOS 14

Posted on Nov 24, 2020 8:04 PM

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Question marked as Top-ranking reply

Posted on Mar 31, 2022 12:38 AM

SOLVED - iPhone 12 Max Pro Dimming.


A non-apple case causes it to overheat!


My iPhone was fine for two years and I switched from the Apple purchased case that I bought at the Apple Store for a non-Apple case to enjoy a new color. Didn’t think about it but started having problems with my phone dimming.


It was constant if I was googling or reading texts etc it would toggle up and toggle down from bright to dim so I could barely read it. It was ridiculous.


Tried everything the Internet suggested. Turning it off helped but that was only because it was cooling it off. It didn’t solve it. Changing any and all settings did absolutely nothing.


Read a post that mentioned they thought it was an overheating issue. Remembered that I had just purchased a new case before this started. Put back on my Apple purchased case. Voila. No issue for a whole month. SOLVED

396 replies

Jan 22, 2021 7:44 AM in response to Morrizes

This must be some random thing then....my phone screen goes black when someone is calling now, and touching the screen will not open the phone...or the phone rings and all the apps are closed, nothing to do to answer. APPLE, what the heck is going on with your software? My iphone 12 pro max works with apps but it sucks when used as a phone?? This feels like Blackberry and Windows xp all over again....sucky software and bad Apple customer support nowadays...

Feb 22, 2021 1:26 PM in response to rjm4261

I also got the iPhone 12 Pro Max and it’s very expensive to have problems, I have the same issue with the brightness, in my case I make sure nothing is enabled like white point reduce, dark mode, Night shift, automatic, True Tone, and all the settings that can cause this and still happening, after some time it get the brightness back again sometimes more sometimes less but it’s frustrating. A lot of settings for the brightness, it was better on the older models when we were in control of the screen now it does what it want.

Feb 28, 2021 4:32 PM in response to Chloebean1604

Having same issue...turned off auto brightness in both spots..and battery is not on low power either and i can actually watch the brightness slide back to left before my eyes.....i then slide it again two or three times...still moves on its own...until i slide it and hold it for about 10 seconds....this is crazy...I'm an electronics tech and by all things i can see there is no adjustment for this...not sure if it's a hardware or software issue

Mar 9, 2021 8:11 PM in response to rjm4261

I had an 8 plus and I upgrade to iPhone 12 max due to the 8 plus having constant dimming issues. Now my 12 pro max does the same thing ,like seriously for 1100$ Can’t get a proper working phone? Apple needs to correct this issue and stop directing their customers to settings and turning off auto dim because that clearly isn’t the issue for the majority of the customers. I would have never purchased a new iPhone I’d I knew it would be the same **** issue.

Mar 27, 2021 5:48 AM in response to rjm4261

My screen keeps dimming all the time! Auto brightness off, True Tone off and yet it still dims, literally 15/20 minutes of use and it’s like the phone can’t cool itself so it just dims the screen, this is awful! It’s the worst of any phone I’ve used for overheating while literally just scrolling Facebook and this isn’t even with the charger plugged in! Just natural use! I’ve had the iPhone 12 Pro Max now since December, so couple software updates and the issue still persists.. what’s the solution? It’s not like I can return a contracted phone and this screen dim sometimes makes the phone unusable! Not happy at all, I left Samsung because of their rubbish exynos chipset and now I’ve got an iPhone that you could cook an egg on the back of, what’s going on??

Mar 27, 2021 6:35 AM in response to through_the_phone_lenz

I am facing similar problem in my iphone 12 Pro Max; Apple Team is requested to look into it and resolve at the earliest. It will impact their business if not able to resolve it. I am an Apple customer for last more than 10 years; I buy new phone every year. I am facing this problem in iphone 12 Pro Max.

My screen keeps dimming all the time! Auto brightness off, True Tone off and yet it still dims, literally 15/20 minutes of use .

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iPhone 12 pro max keeps dimming

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