How to Turn Off Auto-Brightness in iOS 12

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

A person looking at a smartphone in a dark room

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The iPhone's auto-brightness feature balances the luminosity of the screen based on the ambient light, which should make it easier to read, and it saves battery power by lowering brightness when it isn't as needed. Apple moved the auto-brightness control to the accessibility settings starting with iOS 11 and continuing in iOS 12.

The procedure we outline has been tested for iOS 11 and iOS 12.

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 still keep the auto-brightness function activated. A good reason to turn off Auto-Brightness is when you are fighting with your iPhone or iPad to get the right brightness level. With the iPad used indoors much of the time, it may be easier to turn Auto-Brightness off and not bother with adjusting the brightness at all.

  1. Open Settings > General > Accessibility.

    iPhone settings menu
    iPhone general settings screen
    iPhone accessibility settings screen
  2. Select Display Accommodations. Tap the switch next to Auto-Brightness to activate or deactivate this feature.

    iPhone display accommodations settings screen
  3. You can also turn on Reduce White Point, which allows you to adjust the intensity of colors. This feature is similar to the overall brightness setting but will affect brighter colors more than darker colors. A percentage bar will appear when Reduce White Point is turned on to specify the intensity of the effect.

How to Quickly Adjust Brightness on Your iPhone or iPad

You don't need to travel back to the Settings app simply to adjust the brightness level on your iPhone or iPad. The quickest way to tone it down or brighten up your screen is to use the Control Center, which is just a swipe away on your iPhone or iPad. The Control Center offers shortcuts to many settings on the iPhone and iPad from turning Bluetooth on or off to adjusting the volume on the device.

The iOS control panel
  • On iPhone X models or iPads running the latest version of iOS, swipe down from the upper right corner of the screen.
  • On earlier iPhones, swipe up from the very bottom of the screen where the display meets the edge.
  • On iPads that haven't upgraded to iOS 12, swipe up from the bottom.

The brightness controls are highlighted with the icon of a sun and allow you to adjust the brightness by sliding a finger up or down on the brightness control. You can also hold your finger down (or push down) on the control to reveal a button that allows Night Shift to be turned on or off.