iPhone 8 Plus Screen Auto Dimming

I’ve had the same issue since updating my old iPhone 6 with iOS 11. I’ve researched it pretty extensively and basically, it’s Apples way of protecting the phone when it is under high usage, use while charging or the temperature of the casing rises to a certain level. There is no fix for it as it is a software code but hopefully if enough people let them know that we don’t like the feature then possibly they might provide an update removing it. But currently, that is the only thing that will fix it.

I spoke with AppleCare via Chat and then on the phone. They said it was a hardware issue then sent me to the Genius Bar in a store. The Genius Bar replaces my phone. I do notice that my phone doesn’t get as warm when using just Waze and Music streaming with 11.2.6 as it did with the IOS 11.3 beta and I think I have only possibly noticed it dim slightly on its own once but I haven’t been able to replicate t. It’s worked fine since they have replaced it other than that once. So maybe it is a hardware thing or maybe 11.3 beta borked my old phone.

I have the same situation with iphone 8 on the latest iOS. Auto brightness turned off, True tone could be off or on (doesn’t matter). So, brightness could by itself suddenly switch to 75% or lower, to 50%, however brightness setting set to max. It happens while gaming or watching youtube etc. Brightness switch from 75% to 100%, for example, doesn’t increase brightness, it stuck on 75%.

I have had such issue with my 6s and the problem was in certain iOS version, Apple released it last year for 6s to fix suddenly turn off issue (my iphone 6s was eligible for free battery replacement due to this) and there was a dependency with battery %. At 75% battery screen dims to 75% brightness, at 50% to 50% and so on.

Just now, writing this comment my iphone 8 was at approximately 75% max brightness and I couldn’t set it to 100%, it also was connected to the power from 60% battery, at the end of the comment iphone increased brightness to 100% 2 times and came back to normal, battery charged to 73%.

Considering this situation I can assume that this is iOS issue and made to prevent from overheating. I don’t like such approach, instead of doing everything well, Apple trying to fiz the problems in a strange ways. Dissapointed.

Same things happening to me really frustrating it will dim and my brightness will be at 100% and have to just get use to get and then all of a sudden(without me changing the brightness) it will brighten again it’s really frustrating.

I contacted Apple Support tonught, I'm having the same issue. I was given this response:Thank you. Upon researching this, I have found that this is something our engineering team has received reports of that is actually currently under investigation. At this time we advise to keep your iPhone updated as the fix will typically come in the form of an update. Thank you so much for chatting in and reporting this. I am forwarding this onto our engineering team to increase impact of the issue.

Just wanted to report it’s now May 31, 2018 and the Dimming issue is an ongoing headache.

Presently have the iPhone 8 Plus, and it Dims sometimes without any commands from me. Have tried all the fixes Apple and everyone here recommends, but this issue persists.

I have a feeling this is a software issue and that enough of us have reported it so that Apple hopefully will find a fix with an update for the iOS.

I just went back to T-Mobile and changed my iPhone 8 Plus 256gb for another brand new one out of the box, set it up as a new phone, updated he iOS and changed the settings mentioned above and it STILL DOES THE SAME EXACT BEHAVIOR AS THE OTHER ONE AND DIMS THE SCREEN WHEN PLAYING GAMES OR APPS ARE RUNNING!!! 😡😡😡

Hello,

I have the situation on my iPhone 8 Plus (64 GB) with iOS 11.4 (15F79).
I researched and found out that this is an OS setting in order to prevent the overheating of the phone.

The place where I can see this the most is when I am playing PUBG Mobile. I know that it is a demanding game, but I don't like this solution. I prefer to have an overheated phone and play as I wish, with 100% brightness maybe.

Honestly this is my first iOS phone ever. I came to this system to look for stability, liability and smoothness. I heard that this is what Apple is best at. It's starting to look like a small lie to me because of this. And that's not all; above this there are problems with the smoothness in the menu, in the wallpapers for example. If you scroll through the 24 static pictures that they have stock, you can clearly see stuttering. I have an eye for details and I care about them. This is annoying for me. Now just imagine how annoying can be the phone when it dims your screen brightness and you can't do anything about it.
Please fix this. Otherwise I am seriously thinking about moving back to Android. In the end all the phones are stuttering and lagging and chopping when scrolling or in other animations. At least Android is more permissive and the phones with Android are usually a better bargain for the money. I am talking big resolution OLED screens, best cameras, better designs (I mean iPhone 8 and 8 Plus are really outdated from the design perspective).

Also, if anyone else heard anything related to this issue, please inform us.

Thank you if you read this.

I have experienced this too. Is there any updates from apple?

Ram from philippines

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I experienced this like a month after I purchased this. I got the phone last January 2018. Then come feb, my phone started to dim.

Now if it is sunny and I didn't put the brightness to 100%, its so dark, as if my phone is turned off.

Please help.

I’ve been having the same issue since I got my 8+ in October 2017. I figured they’d fix the issue with one of the updates, but I’m still having the problem. I contacted Verizon first and went through all the troubleshooting steps, but it was still happening. They told me to go to the Apple store for a replacement. I drive 2 hours to the closest Apple store and the phone was still dimming and getting warm. I get to the Apple store and of course I can’t get the phone to dim on command, so they wouldn’t replace my phone. I showed the Genius bar person this thread, to prove that I wasn’t just making this up. Still nothing... phone is still dimming as I type this.... I’m frustrated😒

Hi,

I am having the exact same problem while on the PUBG Mobile app. I have actually contacted Apple regarding this issue and they replied saying that it is a problem with the app rather than the iPhone; and asked me to contact PUBG's customer service.

So I contacted PUBG's customer service and they sent me a list of instructions to follow. To click on 'Repair' on the upper right screen of the homepage (the connect page i.e. to FB, twitter, game center). Unfortunately, that did not solve my problem as well.

Hopefully, Apple/PUBG mobile will rectify this issue soon cuz it ***** having to play with a dim screen in PUBG.

Thanks.

I went to the Apple store and they said that its normal. But one of my friend has an Iphone 8 plus and hes not having any problem with the brightness.

It might be the update or theres something wrong with my phone

I bought an iPhone 8 Plus 256GB when it first came out. I didn’t have a dimming problem until I got a case for it. Now it dims whenever it gets too “warm”. The ONLY a thing that works is to turn it off completely and either let it cool naturally or help it a little if you’re in a hurry. The be put it in my freezer a few times and that REALLY speeds up the cooling. Once it’s cool, it’s back to REAL 100% brightness! I’m HOPING that when iOS12 is released, this irritating problem will be fixed. If not, my next phone will NOT be an iPhone and I’ve had iPhones since the iPhone 3+! My wife had Androids and they were terrible for her to figure out. I’ll have to check out the new ones before switching but SOMEONE has to make a phone that doesn’t constantly drive you up a wall!!!

Your suggestion to turn off Zoom worked like a charm! Thank you so much! My 7+ had a problem with brightness. Even turned up to 100%, the display was only around 50%. I followed your directions and it is back to normal.

Theyre never gonna fix it. Its faulty engineering design that prevents the chips inside from melting because they use the old LCD screen that heats up unliked the AMOLED that they use on other phones.. it is what it is.. im done with apple now.