How to Turn Off Auto Brightness on an iPhone 12

How to Turn Off Auto Brightness on an iPhone 12

How to Turn Off Auto Brightness on an iPhone 12

The auto brightness feature on an iPhone adjusts its screen brightness based on the ambient lighting in your environment. It’s a great way to conserve battery life and prevent eye strain, but you can disable this feature to control your display brightness manually.

But, you might have noticed that your iPhone keeps dimming even though you have this feature disabled. It could be due to a hardware or software issue.


Your iPhone 12 has a built-in feature called Auto Brightness that adjusts the screen brightness depending on the lighting around you. This is a great feature that should prevent eye strain and make it easier to see your screen, but sometimes it doesn’t work properly.

If your display keeps dimming, there are a few things that you can try to fix it. First, you’ll need to make sure that the Auto Brightness setting is turned off. If it’s not, you might need to update your iOS software.

Another common reason that your iPhone’s screen dims is if you have the Night Shift or Low Power Mode on. These two settings reduce your display’s blue light to save on battery power.

To disable these features, open your iPhone’s settings and look for the option to turn them off. Then, slide the toggle to the left or right to disable them.

Apple notes that turning off Auto-Brightness may affect your phone’s battery life, so you might want to keep it on if you use your iPhone a lot and want to preserve it. Also, if you have an OLED-equipped display, this may cause a burn-in effect over time, so you might want to avoid letting it run at maximum brightness for too long.

Disabling these features can help you save on battery power and improve your iPhone’s performance. However, you’ll need to be careful not to leave your iPhone on high brightness for too long when viewing a static image or video.

Control Center

When you have an iPhone 12 running iOS 11 or higher, you can turn off auto brightness to get more control over your screen’s lighting. The feature adjusts your display’s brightness according to the light surrounding you and may be helpful when using your phone in low light, but it can also be annoying if your screen keeps dimming without cause or reason.

You can disable auto brightness by going to Settings and tapping Accessibility – Display Accommodations. This will reset the settings to the default options, so you won’t lose any personal data on your device when doing this.

Disabling auto brightness will reduce the amount of battery your iPhone 12 uses, so it’s a good option if you want to save some on your monthly bill. However, it’s important to note that if you disable this setting and then try to use your phone during the day, you may notice a decrease in battery life.

The reason why it affects battery life is that Auto Brightness takes into account the current brightness level on your device, and then automatically adjusts it. If you use your iPhone at a lower brightness, it will still use Auto Brightness to make up for the difference in brightness.

To disable Auto Brightness on an iPhone 12, open Settings and tap Accessibility – Display Accommodations, then disable Auto Brightness. You can also turn it off by long-pressing the screen brightness control in the Control Center.

If you’re having trouble adjusting the screen brightness on an iPhone 12, it may be caused by something preventing your ambient light sensor from working correctly. This is a sensor on the top of your iPhone’s display that’s responsible for adjusting your screen’s brightness based on the light around you.


If you’re having trouble with your iPhone 12’s screen dimming when using apps or watching movies, there could be a number of causes. Usually, this is due to an issue with the iOS software itself, but there’s also a chance it could be due to hardware problems. If you haven’t already, it might be worth visiting your local Apple Store to see if they can check it out for you.

If that doesn’t solve the problem, you can try resetting your device. There are a few different ways to do this, but the best way is likely a soft reset or forced restart. Both of these methods will reset the system without impacting your data.

First, you’ll want to connect your iPhone to your computer. You can do this with a Lightning to USB cable or a Lightning dock connector. When you pair the device, it’ll ask to be “Trusted” on your computer, which is where you’ll need to enter a PIN code.

Once that’s done, you can use iTunes or Finder to place your iPhone into recovery mode. This is where you can then do a software update or restore to get your iPhone back up and running again.

However, this process can take a little longer than usual, so it’s not recommended that you try to do it at home if you have other things on your schedule. If you do have to do it at home, it’s better to do a forced restart rather than a soft reset.


iOS devices adjust their brightness based on the surrounding light conditions to reduce power consumption and conserve battery life. It’s a useful feature that most users love, but it can also cause problems if it doesn’t adapt correctly to your environment.

You can disable auto brightness on iPhone 12 by going to Settings -> Accessibility -> Display & Text Size and toggle the switch next to “Auto-Brightness” off. Once the toggle is off, the screen won’t automatically change its brightness depending on the surrounding lights or environments, but you will need to manually tweak it if you want to maintain a high level of brightness.

It’s not recommended to turn off auto brightness because it may affect your battery life in the long run, which is why you should avoid doing so if possible. But it’s still something you can try if the issue persists.

Another thing that can be causing the dimming problem is “True Tone.” This is an automatic feature on recent iPhones that changes its color temperature and intensity according to your room’s ambient lighting. However, it’s a hit-and-miss feature that doesn’t always work effectively and can result in fluctuations in the brightness of your iPhone 12.

To disable True Tone, go to Settings -> Accessibility -> Display and Tap the “True Tone” button at the bottom. You can then tap on “Disable.”

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