How to Turn Off Auto-Brightness in iOS 12

Not a fan of your iPhone or iPad's Auto-Brightness feature? Try this

The iPhone auto-brightness feature balances the luminosity of the screen based on the ambient light, which makes it easier to read, and it saves battery power by lowering brightness when it isn't needed. Apple moved the auto-brightness control to the accessibility settings starting with iOS 11.

Instructions in this article apply to iOS 11 and later.

How to Turn Off Auto-Brightness on the iPhone or iPad

Auto-Brightness takes into account the brightness level found in Settings and adjusts based on that level, so it is possible to lower the overall brightness to save battery life and keep the auto-brightness function activated. A good reason to turn off Auto-Brightness is when you can't get the right brightness level with your iPhone or iPad. With the iPad used indoors much of the time, it may be easier to turn Auto-Brightness off and not adjust the brightness at all.

  1. Open Settings.

  2. Select General.

  3. Tap Accessibility.

  4. Go to Display Accommodations.

    General > Accessibility > Display Accommodations on an iPhone
  5. Tap the Auto-Brightness toggle switch to activate or deactivate this feature.

  6. Turn on Reduce White Point if you want to adjust the intensity of colors. This feature is similar to the overall brightness setting but affects brighter colors more than darker colors. A percentage bar appears when Reduce White Point is turned on to specify the intensity of the effect.

    Display Accommodations screen in iOS with the Auto-Brightness and Reduce White Point switches highlighted

How to Quickly Adjust Brightness on Your iPhone or iPad

You don't need to go to the Settings app to adjust the brightness level on your iPhone or iPad. The quickest way to tone down or brighten up your screen is to use the Control Center, which offers shortcuts to many settings on the iPhone and iPad.

  1. To open Notification Center from any screen on your iPhone or iPad:

    • On iPhone X models and newer or iPads with the latest version of iOS 12 and up, swipe down from the upper-right corner of the screen.
    • On earlier iPhones, and iPads with iOS 11 or older, swipe up from the bottom of the screen where the display meets the edge.
    Swipe down from the upper-right corner of the screen to open Notification Center on an iPad
  2. The brightness adjuster is a slider marked with a sun icon.

    How to adjust iPad brightness
  3. Slide up to make the screen brighter and slide down to make it dimmer.

  4. Or, hold your finger down (or push down) on the control to reveal a button that toggles Night Shift and True Tone.

    True Tone is available on the iPhone 8 and newer, 5th-generation iPad Minis, iPad Air (2019), iPad Pro 9.7-inch and later, and newer Macs.