Why Does My Phone Brightness Keep Changing?A Complete Guide!

My Phone Brightness Keep Changing

Do you notice that your phone’s brightness keep changing? Are you looking for ways to fix your phone brightness keep changing? Then you are at the right place. We present to you a complete guide to help you out of this situation.

All new smartphones have the updated feature to adjust the phone’s brightness settings to best suit the environment the user is in. When you use your phone indoors, the phone’s brightness is automatically dimmed to cause less strain on your eyes. While when you take it outside, you will notice that the phone’s brightness automatically increases to maintain the screen visibility when used under the bright sun. This useful feature is called Auto-Brightness.

If you are wondering why does my phone brightness keep changing? Try out the following fixes for iPhones and Android.

1.Turn off Auto-Brightness

2.Check the Night Shift

3.Check True Tone

4.Turn off Low Power Mode

5.Change Brightness Manually

Recently many people have raised concerns about their phone brightness keep changing, even when the auto-brightness is disabled. We are here to discuss this concern in detail. With this article, you will be able to dissect the reason for your phone’s abnormal behavior, and all the ways in which you can fix your phone brightness keep changing.

Why Does My Phone Brightness Keep Changing?

Are you worried that your phone brightness keep changing? Do you notice that your phone’s brightness keeps getting dimmer and you are not able to figure out why. You could increase the brightness of your screen but it automatically gets reduced after a while. We present to you the reasons for your phone brightness keep changing, and all the ways to fix it.

Reason 1: Auto-Brightness

The most common reason as to why your phone brightness keep changing is due to your auto-brightness being turned on. This feature will automatically change your phone’s brightness to best suit the environment you are in.

Fix for iPhone

Apple users, who have complaints that their phone brightness keep changing, can turn off their iPhone’s auto-brightness, to solve the issue.

 turn off auto-brightness -  Phone Brightness Keep Changing

Step 1 – Open Settings App.

Step 2 – Click on Accessibility > Display and Text Size.

Step 3 – Click the toggle to turn off auto-brightness.

You should know that when you turn off the Auto-brightness it could affect your iPhone’s battery life. Do not keep your iPhone in maximum brightness throughout the day.

Fix for Android

Android users can turn off auto-brightness in their phones to stop phone brightness keep changing, by the following steps.

 Phone Brightness Keep Changing - turn off Auto Brightness.

Step 1 – Open your phone’s Settings.

Step 2 – Scroll down to select Display & Brightness.

Step 3 – Tap the toggle to turn off Auto Brightness.

Remember to adjust your screen brightness to what best suits your surroundings. Using your phone with high brightness for a long period of time, will cause much strain to your eyes, resulting in permanent damage.

Related : Why Is My Phone Sending Double Texts? How to Fix?

Reason 2: Check Night Shift

Have you enabled the Night Shift on your mobile? If you did, it could result in phone brightness keep changing. The Night mode is a feature that makes your phone’s display warmer, for users to use it at night, in their bed before falling asleep. 

Fix for iPhone:

For iPhone users, who have enabled the Night Shift mode, can turn it off and fix their phone brightness keep changing, by the following steps.

 Night Shift off -  phone brightness keep changing

Step 1 – Go to Settings.

Step 2 – Select Display & Brightness.

Step 3 – Click to turn the Night Shift off.

The speciality of enabling the Night Shift is you can schedule it to automatically turn on at a designated time. You should click to turn off the toggle next to ‘Scheduled’ to stop the Night Shift mode from automatically turning on.

Newer versions of iPhones iOS 11 or newer can turn off the Night Mode by swiping down from the upper right hand of the phone’s screen

Fix for Android

The Night Shift for Android phones is called Eye Comfort. You can turn the Eye Comfort on to reduce the blue light from the screen and alleviate the strain on your eyes. When the Eye Comfort is turned on, your display screen will have a yellowish hint. If you feel that your phone brightness keep changing, you can turn the Eye Comfort off by the following steps.

 phone brightness keep changing - eye comfort

Step 1 – Open the Settings app.

Step 2 – Select Display & brightness.

Step 3 – Click to open Eye Comfort.

Step 4 – Tap the toggle to turn off.

Android users also have the option to automatically turn on and off the Eye Comfort at a custom scheduled time.

Reason 3: Check True Tone

True tone display feature adapts the color of your phone’s display depending on the lighting conditions around you. This color adaptation will make the display of your phone dimmer.

Fix for iPhone

The True Tone feature is now found only in iPhones. You can follow these steps and stop your phone brightness keep changing.

turn off True Tone - phone brightness keep changing.

Step 1 – Open Settings app.

Step 2 – Click to open Display & Brightness.

Step 3 – Click the toggle to turn off True Tone.

Fix For Android

Android phones have the option to manually control the Screen color mode. If you have made changes to the phone’s default settings, to a cooler or warmer tone, we recommend that you reset it to default to stop phone brightness keep changing.

Step 1 – Open the Settings app.

Step 2 – Select Display & brightness.

Step 3 – Click on Screen Colour Mode.

phone brightness keep changing. - screen color mode

Step 4 – Set to Default.

phone brightness keep changing. - default

You can thus solve your phone brightness keep changing by making changes to your phone’s color temperature.

Related : How To Remove Duplicate Contacts On iPhone | 5 Ways to Fix

Reason 4: Low Power Mode

The Low Power Mode will adjust your phone’s settings to automatically save the battery life. This will be activated automatically whenever your device runs out of juice.

Fix for iPhone

Apple users can turn off the Low Power mode to fix phone brightness keep changing issue. However, you should remember that if you turn it off, your device is more likely to run out of battery sooner.

phone brightness keep changing. - low battery mode

Step 1 – Open Settings App.

Step 2 – Click on Battery.

Step 3 – Click to toggle to turn off Low Battery Mode.

When you turn off the low battery mode, your iPhone will no longer turn off the background activities automatically, to save power. You will have to manually check for all running app that drain your battery life.

Fix for Android

Android users have the Power Saving Mode on their devices. To stop your phone brightness keep changing, you should try to turn off your power saving mode.

Step 1 – Open the Settings app.

Step 2 – Scroll down to select Battery.

Step 3 – Click on Power Saving Mode.

 phone brightness keep changing - power saving mode

Step 4 – Click the toggle to turn off.

 phone brightness keep changing - off

Step 5 – Select Default Optimisations.

Step 6 – Click the toggle to turn off Reduce Screen Brightness.

 phone brightness keep changing - off

You can thus stop phone brightness keep changing, by making changes to your phone’s Power saving mode.

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Reason 5: Change Brightness Manually

If none of the above methods seems to fix your phone brightness keep changing. You can fix it by manually changing your phone’s brightness.

Fix For iPhone

If you have turned off the Auto-brightness and the Night Shift mode, then you can change the brightness manually, as the last resort. However, this cannot be a permanent solution and can get tenuous after a while.

 phone brightness keep changing - adjust brightness

Step 1 – Swipe down from the top right-hand corner of your screen.

Step 2 – Change the brightness by manually gliding the slider up and down.

You can set your iPhone’s brightness according to your preference.

Fix for Android

Android user can easily change their phone’s brightness and fix phone brightness.

 phone brightness keep changing - adjust brightness android

Step 1 – Swipe down from the top of your Home Screen.

Step 2 – Change your screen’s brightness by manually gliding the slider left and right.

You can thus set your phone’s brightness as per your preference.

Other Ways to Fix Your Phone Brightness Keep Changing

If you are not able to solve the issue after trying out all the solutions mentioned above, you can make changes in your device and try to fix phone brightness keep changing.

  • Soft Reset your device
  • Auto lock when screen turns off
  • Increase screen timeout
  • Check power saving mode
  • Use external apps to check screen brightness
  • Restart your phone
  • Is your phone hot?
  • Update your phone

Related : How To Fix iPhone 13 Airdrop Not Working | 8 Easy Fixes!

Wrap Up

A recent survey has concluded that a person spends over 3 hours and 45 minutes on their phones, every day, and this is rapidly increasing. Imagine the health concerns that arise along with the increase in the time spent looking at this tiny device emitting LED lights, for hours together. Let us be responsible, and protect our eyes by adjusting our devices brightness to best protect them. We hope that you are now able to fix your phone brightness keep changing, by following the instructions given in this article.

Frequently Asked Questions

Q1. How Can I Turn Off Auto Brightness?

The most common reason as to why your phone brightness keep changing is due to your auto-brightness being turned on. This feature will automatically change your phone’s brightness to best suit the environment you are in.

Apple users, who have complaints that their phone brightness keep changing, can turn off their iPhone’s auto-brightness, to solve the issue.

Step 1 – Open Settings App.

Step 2 – Click on Accessibility > Display and Text Size.

Step 3 – Click the toggle to turn off auto-brightness.

You should know that when you turn off the Auto-brightness it could affect your iPhone’s battery life. Do not keep your iPhone in maximum brightness throughout the day.

Q2. How Can I Save My Phone’s Battery?.

Android users have the Power Saving Mode on their devices. To stop your phone brightness keep changing, you should try to turn off your power saving mode.

Step 1 – Open the Settings app.

Step 2 – Scroll down to select Battery.

Step 3 – Click on Power Saving Mode.

Step 4 – Click the toggle to turn off.

Step 5 – Select Default Optimisations.

Step 6 – Click the toggle to turn off Reduce Screen Brightness.

You can thus stop phone brightness keep changing, by making changes to your phone’s Power saving mode.

Q3. How Can I Fix My Phone’s Brightness Keeps Changing?

You can make changes in your device and try to fix phone brightness keep changing.

  • Soft Reset your device
  • Auto lock when screen turns off
  • Increase screen timeout
  • Check power saving mode
  • Use external apps to check screen brightness
  • Restart your phone
  • Is your phone hot?
  • Update your phone

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