iPhone brightness keeps changing

Don’t worry man, I had the same issue on my iPad Air. If you can’t find the auto brightness setting on display and brightness, look on general-go to accessibilit-find display accommodation. That is where I found the auto brightness setting. Hope this helped!

Here is the new turn auto brightnes off address on iphone:

Settings-general-accessibility-display-accomadations-auto brightnes

With 11.1.2; General/Accessibility/Display Accommodations/Auto-Brightness

It hasn't been removed, just moved. Settings > General > Accessibilities > Display Accommodations > Auto-Brightness.

you have to turn off the auto brightness setting to off that way it won't change

I found where the auto brightness is...

Go to Settings > GENERAL > Accessability > Display Accomodations > AUTO BRIGHTNESS is there. Turn off.

I had the same issue. Auto brightness is OFF and the brightness slider is UP on maximum but screen still keeps going down in brightness level by 1-2 shades. Contacted Apple support, they did some diagnostics and couldn’t fix it so replaced with a new phoe

This is not just a settings issue. I have the same problem. I have an iPhone 8 (but to be fair, it happened with my iPhone 6 as well), and iOS 11.3. Auto-Brightness is turned off (by the way, the new location for this setting is not intuitive and almost stupid that it's buried so far in settings, which furthers my belief that Apple doesn't want you to use it), I have True Tone turned off, and I have my brightness set at about 55%. It will be that way for a while. if I have the phone locked for a while, when I go back in, the brightness slider is set way down at about 25%. The Auto-Brightness and True Tone settings haven't changed, but the brightness slider went down to about half of what it was and it does not automatically return to that brightness. I'm not entirely sure when it started happening with my iPhone 6, but I think it was probably around iOS 11. When I got my brand new iPhone 8 (after digging for the auto-brightness setting, which again is in an inexplicable place) I set everything the way I wanted it and it has yet to stay that way. It seems that, for whatever reason, Apple wants to save your battery life at any cost and regardless of how you feel about it. This screen dimming thing is not helpful, and it makes it harder to see things until you adjust it back. I have a new phone, a new battery, and a completely fresh install of iOS 11.3, and it still wants to turn my screen brightness down, even after I tell it not to. Battery drain or not, the phone does me no good if I can't see it.

I’ve disabled auto-brightness in Accessibility as well as ensured white point is disabled. Regardless, my screen will suddenly drop in brightness level. I have to manually flick up to the mini-menu to return brightness to full. Any help would be great.

Night shift is off for troubleshooting.

Same here -- I have all the correct settings enabled to ensure that the brightness doesn't auto-change, and it keeps changing! My other complaint is that even when I have the brightness turned all the way up, it is considerably darker than my other phones. For example, I have an iPhone 7 for work and when I compare them side-by-side (with both having the brightness turned all the way up) my iPhone 8+ is about 3/4 less bright. So disappointed 😟

This is incredibly frustrating when watching an apple movie in iTunes on my iPad supposedly 4K HDR iOS 11 (usually with subtitles enabled): The brightness/contrast fluctuates with the characters on the screen. This is followed me across different iPads different iOS versions different formats. I don’t understand why the best audio video tablets on the planet can’t handle subtitles without fluctuating brightness. This helps; too bad apple doesn’t (recalibrate the sensors):

https://www.addictivetips.com/ios/fix-ios-6-auto-brightness-issues-by-calibratin g-iphone-light-sensors/

I have an iPhone 7 Plus, and auto-brightness switched off. But u still have to check the phone brightness 3 times a day because something keeps raising it from 30% to 100%, and it doesn't have anything to do with auto-brightness settings.

To me it seems to be an app. Apps aren't supposed to access such things without authorisation, but they can and do. I recently informed Apple about how i was talking un the same room as my iPhone about beans on toast to my Girlfriend who is from Laos and doesn't know it, and three hours later i open youtube and the first video i see is 'beans on toast'

A month earlier i had told a friend in iMessage (which google shouldnt have access to), using Siri, that "i used to go to St Peter's School York"

Next day i open youtube on my Pc logged in to the same google account as that on my iPhone, and presto, the first video i am recommended is "St Peter's School York"

Apple assistant seemed concerned and said would send it up the line, because this means that apps are accessing forbidden features for forbidden reasons

Google and youtube apps definitely secretly listen in on your conversations. I already proved that to myself with the above story. So coming back to screen brightness, i would say its a non Apple app messing with brightness

This is in reply to the person that answered your question. I am in settings, display and brightness, and I no longer have the option for Auto Brightness. Was this removed in iOS 11?

I have auto brightness turned off and yet my brightness continues to change by itself. And what a daft move of location for the auto brightness switch!

11.4 auto brightness on or off still auto adjusts