The “True Tone” Display Is Enabled.

We have listed four things that you need to make sure of. The “true tone” option is located beneath the brightness bar. While the feature is automatically turned on to increase the performance of your phone, if you're not a fan of it, you can easily switch it off and return to adjusting your phone's screen brightness automatically.

I Was Sure The Auto Brightness Was Off, Checking ‘Display And Brightness’ Under Settings Several Times To Make Sure Nothing Was Turned On That Would Cause The Dimming.

Try changing this to never to see if the problem disappears, otherwise it could potentially be a software bug or display problem. Make sure the switch next to true tone is off. As mentioned earlier, it’s a feature that’s enabled out of the box, so if you haven’t fiddled with the display settings, this is likely the culprit.

There Could Be Several Reasons For The Iphone Display To Keep Dimming:

This will be one of two problems: Why does my screen keep dimming? After i turn off the phone and then back on after a few minutes, the brightness would go back to normal

If Those Features Are Turned On Your Screen Will Automatically Dim.

Open settings and tap display & brightness. When your iphone is idle, it automatically turns off its screen and locks itself to save power. So, check them one by one.

Lowering And Reraising It Does Not Fix The Problem.

If your iphone’s display keeps dimming, it’s likely because of features that automatically adjust the screen’s colors or brightness based on light conditions or battery life. I would then play around the brightness level setting and my screen doesn’t get brighter even though i slide the thing up all the way and just stays dim. Right as it’s about to do that, it also dims the screen to let you know that it’s about to turn off.