How to Turn Off Auto Brightness on iPhone

Thanks to light sensors, your iPhone or iPad can automatically adjust the display brightness to match the ambient lighting. If you prefer manual controls, it’s possible to turn off Auto-Brightness, but Apple put the option in an unusual place.

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RAYMOND OGLESBY @RaymondOglesby2
February 16, 2022

Thanks to light sensors, your iPhone or iPad can automatically adjust the display brightness to match the ambient lighting. If you prefer manual controls, it’s possible to turn off Auto-Brightness, but Apple put the option in an unusual place.

This is for the iPhone and iPad. Screenshots are from iPhone XR

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Strangely, the iPhone and iPad’s automatic brightness option is not in the Display & Brightness settings like you would expect. You will find the True Tone toggle, but nothing for Auto-Brightness. We just need to look somewhere else.

What is Auto-Brightness

In brighter rooms or outdoors, iOS increases the display brightness. In darker environments or at night, it will lower the brightness.

This is handy because it generally keeps your iPhone or iPad screen’s brightness appropriate for the lighting conditions without requiring you to go into Settings or visit the Control Center.

It also helps save battery life, as your device’s display is often the largest battery life eater and Auto-Brightness prevents the screen from being brighter than it needs to be.

But sometimes iOS’s “guess” at what the iPhone’s brightness should be and this is not what you want. For example, it may be quite dark in a room but you want to have maximum brightness for a particular app or movie. Or you may want to reduce screen brightness to save on battery life in an otherwise bright room.

Disable Auto-Brightness

First, open the Settings app from the Home screen. Refer to the below image:

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Accessing Settings app

Here’s where Apple throws the curveball. You actually want to go to Accessibility, not the Display settings. See the below image:

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Accessing Accessibility option

Now, tap the Display & Text Size category within Accessibility. See the following image:

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Accessing Display & Text Size option

Next, scroll down to the bottom and toggle off the switch for Auto-Brightness. Refer to the below image:

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Enable/Disable Auto-Brightness toggle

That’s it! Now when you adjust the brightness it will stay at the level you set until you change it again. This can be a good trick to save battery life; if you keep the brightness low; or it can drain the battery quickly if you leave it on high brightness a lot.

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Author: Raymond

I am Raymond Oglesby, an Information Technology (IT) specialist with 30 years in the field. I have taught Microsoft Applications and troubleshot computers in 15 countries and many States. My career was focused on mainframes and desktops from application development to implementation. I have written hundreds of programs for various architectures. I decided to start a blog to share my knowledge and experiences with you. I plan on updating this blog at least twice a week about smart phone apps to Windows. Please feel free to leave a Comment or Tweet. I would love to hear from you. Do you have a computer tech question? I will do my best to answer your inquiry. Please mention the app and version that you are using. To help me out, you can send screenshots of your data related to your question.

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