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Home >Fix Auto Brightness Doesn't Work

How to Fix Auto Brightness Not Working in iOS 11/12

[Summary]: Finding that auto brightness not working after an iOS 11 and iOS 12 update? Auto brightness is disable in iOS 11 or iOS 12? Read on the five simple and workable solutions provided in this guide to fix iOS 11/12 auto-brightness not working on iPhone.

“I found that the auto brightness has disappeared from my iOS 11 iPhone. The brightness did not change with day and night since I updated from iOS 10 to iOS 11. Auto brightness is now disabled. How can I fix iOS 11 auto brightness not working on iPhone?”

iphone screen dim

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We all know that auto brightness is enabled by default on iOS 11/12 devices which means your screen automatically adjusts its brightness to the light and atmosphere of your location to avoid hurting your eyes and saving battery life. You may have experienced it and think it is a good change. However, recently, some users complained that they encountered iPhone brightness issues after updating to iOS 11, iOS 12, such as auto brightness doesn’t work, brightness doesn’t rise, brightness levels keep rising, and so on. Auto Brightness not working properly, how to fix? In this tutorial, we offer 5 top tips to fix iPhone brightness not working in iOS 11/12 problem. Now let’s check it out.

Tip 1: Turn Off Reduce White Point

A setting called Reduce White Point reduces the intensity of the bright colors on your iPhone, and you’ll have a dim screen. To turn off Reduce White Point, you can go to “Settings” > “General” > “Accessibility” > “Display Accommodations” > turn off “Reduce White Point”.

Tip 2: Restart Your iOS 11/12 Device

Regularly restarting your iPhone will effectively reduce unexpected problems, such as iPhone auto brightness doesn’t work, iOS 11/12 screen recording not working, iMessage doesn’t say delivered, etc.

Force restart on an iPhone 6S or earlier: Press and hold both the Home and the Side (or top, depending on the model) buttons for at least 10 seconds, until you see the Apple logo.

Force restart on an iPhone 7: Press and hold both the Side and Volume Down buttons for at least 10 seconds, until you see the Apple logo.

Force restart on an iPhone XS,XS Max,XR/X/8:

– Press and release the Volume Up button.
– Press and release the Volume Down button.
– Press and hold the Side button until the screen turns off and then turns back on. And you can release the side button when the Apple logo appears.

Tip 3: Disable Zoom

If the “Zoom” feature is enabled, a dim screen may be displayed on the iPhone. Therefore, disabling Zoon is a worthwhile attempt to solve this problem.

Go to Settings > General > Accessibility > Zoom > Turn it off.

Tip 4: Reset All Settings on iPhone

You can try to fix iPhone auto brightness issue by resetting all settings on device. By doing this, all the settings on iPhone will be wiped. Note that this operation won’t cause any data loss.

Go to Settings > General > Reset > Reset All Settings.

Tip 5: Restore Your iOS 11/12 Device

If your phone screen is still dim or the auto brightness is not working properly after trying the above 4 tips, it is regrettable to tell you that you need to restore iOS 11/12 device from iCloud or iTunes. Either of them will delete all current data on the device, including contacts, messages, notes, call logs, photos, videos, whatsapp chats and more. For better keep the data safe, we highly recommend you to back up your iPhone in advance.

Don’t miss: Recover data from iPhone with or without backup

How to Restore iPhone from iTunes Backup:

Step 1. Connect your iOS 11/12 device to PC.
Step 2. Open iTunes and click on the iPhone device icon in the upper left corner of iTunes.
Step 3. Click “Summary” panel.
Step 4. Click “Restore iPhone”. Now, your phone will be restored.

restore iphone from itunes backup

Extra Tip: How to Manage Data on iOS 11/12 Device

Some unexpected problems occur on iOS 11/12 devices. For example, iPhone stuck on Apple logo/ recovery mode, iPhone physical broken or even virus attack, iPhone keyboard not working, iPhone stuck with a black screen of death. So how do you manage your data and keep your data in a safe state? iOS Toolkit – iOS Transfer is such a tool enables you to export all of data types to Windows PC or Mac computer with 1 simple click. And you are able to import/export/transfer photos, videos, music and more on iOS device with PC. If you want to sync iTunes music to Android phone or add music songs to iTunes library, the toolkit can also help you out. Plus, it adds a feature in transfer all data and files between Android and iPhone, such as switching to the latest iPhone XS, iPhone XS Mac, or iPhone XR.

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