Your iPhone display keeps getting dimmer and you don’t know why. Even when you turn the screen brightness up, your iPhone just gets dim again. In this article, I’ll explain why your iPhone keeps dimming and show you how to fix the problem for good!
For those who would rather watch than read, check out our YouTube video about why your iPhone keeps dimming!
Why Your iPhone Keeps Dimming
Most of the time, your iPhone keeps dimming because Auto-Brightness is turned on. Auto-Brightness is a feature that automatically adjusts the brightness of your iPhone screen depending on the lighting conditions around you.
At night when it’s darker, Auto-Brightness will make your iPhone display darker so your eyes aren’t blinded by what you’re looking at on the screen. If you’re out at the beach on a bright and sunny day, Auto-Brightness will usually make your iPhone display as bright as possible so you can actually see what’s happening on the screen!
You’ll have to turn off Auto-Brightness if your iPhone keeps dimming and you want it to stop. Open Settings and tap Accessibility -> Display & Text Size. Then, turn off the switch next to Auto-Brightness.
Apple notes that turning off Auto-Brightness can affect your iPhone’s battery life. Essentially, if you leave your iPhone on maximum brightness all day, it’ll drain the battery faster than if you had left your iPhone on minimum brightness all day. Check out our other article to learn more iPhone battery tips that’ll do much more to extend its battery life!
Is Night Shift Turned On?
Another common reason why it may look like your iPhone keeps dimming is that Night Shift has turned on. Night Shift is a feature that makes your iPhone display warmer, which can help make it easier to fall asleep at night after using your iPhone.
Go to Settings -> Display & Brightness and tap Night Shift. You’ll Night Shift is on if the switch next to Manually Enabled Until Tomorrow is turned on. Tap that switch to turn Night Shift off.
If you’ve scheduled Night Shift on your iPhone, this feature will automatically turn on during a designated period of time. You can turn off the switch next to Scheduled to prevent Night Shift from turning on automatically during certain hours of the day.
Night Shift can also be toggled on or off from Control Center if your iPhone is updated to iOS 11 or newer. To open Control Center, swipe down from the upper right-hand corner of the screen on an iPhone with Face ID, or swipe up from the very bottom of the screen on an iPhone without Face ID.
Next, press and hold the brightness slider. Then, tap the Night Shift button to toggle it off or on.
Is True Tone Turned On?
True Tone automatically adapts the color of your iPhone’s display based on the lighting conditions surrounding you. It’s possible that such a color adaptation is making it appear as though your iPhone display is getting dimmer.
Open Settings and tap Display & Brightness. Make sure the switch next to True Tone is off. If the problem persists, keep reading!
Turn Off Low Power Mode
Low Power Mode adjusts a variety of iPhone settings to help save battery life. One thing Low Power Mode does is reduce screen brightness. Head to Settings -> Battery and make sure the switch next to Low Power Mode is off.
Turn Off Reduce White Point
Reduce White Point reduces the intensity of bright colors on the display. When Reduce White Point is on, your screen becomes dimmer.
Open Settings and tap Accessibility -> Display & Text Size. Scroll down to Reduce White Point and check if the switch is on. If the switch is on, tap it to turn off Reduce White Point.
If you’d like to leave Reduce White Point on, try dragging the slider all the way to the left. The further the slider is to the right, the more the intensity of bright colors is reduced.
Turn Off Always On Display
The iPhone 14 Pro and 14 Pro Max come with a new feature: Always On Display. This feature dims your iPhone’s Lock Screen while still displaying some important information like the time and your widgets.
Always On Display is essentially a darker version of the Lock Screen that stays on all the time. It may look like your iPhone 14 Pro or Pro Max keeps dimming when it transitions to Always On Display.
To turn off Always On Display, open Settings and tap Display & Brightness. Scroll down and turn off the switch next to Always On.
My iPhone Is Still Dimming!
Although it’s unlikely, your iPhone could still get dimmer after Auto-Brightness, Night Shift, and Low Power Mode have been turned off. A software problem or a hardware problem could be the reason why your iPhone keeps dimming.
The steps below will walk you through some basic software troubleshooting steps and help you find a repair option if your iPhone is broken!
Restart Your iPhone
Restarting your iPhone is a common fix for minor software problems that could be dimming the display. Here’s how to restart your iPhone depending on which model you have:
- iPhones without Face ID: Press and hold down the power button until “slide to power off” appears. Then swipe the red power icon from left to right to shut down your iPhone. To turn your iPhone back on, press and hold the power button again until the Apple logo appears directly on the center of the screen.
- iPhones with Face ID: Simultaneously press and hold the side button and either volume button until “slide to power off” appears on the display. Then, swipe the red power icon from left to right across “slide to power off”. Wait a few moments, then press and hold the side button again to turn your iPhone X or newer back on.
Is Your iPhone Hot?
Your iPhone screen may dim when it becomes too hot. This is a safety precaution built into the iPhone to help prevent hardware problems from occurring when your iPhone overheats.
If your iPhone is hot to the touch, try putting it down in a shady spot for awhile to let it cool off. Check out our other article if your iPhone continues to overheat!
Update Your iPhone
Apple regularly releases software updates to introduce new iPhone features and fix troublesome bugs and errors. Open Settings again and tap General -> Software Update. Tap Download and Install if a software update is available.
After the update is complete, go back to Settings -> Accessibility -> Display & Text Size and make sure Auto-Brightness is turned off. Sometimes this feature gets turned back on after updating iOS!
Back Up Your iPhone
Before going any further, make sure you save a backup of your iPhone. A backup is a copy of all the information on your iPhone. Our next step is a DFU restore, so you’ll want to have a backup ready so you don’t lose any of your data or personal information.
DFU Restore Your iPhone
The DFU restore is the deepest type of iPhone restore. All the code on your iPhone gets erased and reloaded when you put it in DFU mode and restore. This is the final step you can take to completely rule out a software problem. Check out our other article to learn how to put your iPhone in DFU mode!
iPhone Repair Options
Although it’s pretty unlikely, your iPhone may be dimming because of a hardware problem with the display. Set up an appointment and take your iPhone into your local Apple Store, especially if you have AppleCare+. A Genius will be able to assess the damage and let you know if a repair is necessary.
iPhone Keeps Dimming: Fixed!
You’ve fixed your dim iPhone and the display looks normal again! Next time your iPhone keeps dimming, you’ll know exactly how to fix the problem. Leave any other questions you have about your iPhone’s display in the comments section down below.