If your iPhone screen keeps dimming even though you’ve turned off auto brightness, it may be a sign of a hardware problem. It’s best to take your phone in for a checkup at the nearest Apple Store, and if the Genius finds any problems, they can fix it.
Most recent iPhones (iPhone 8 and above) have a feature called True Tone that adjusts the display’s color temperature and intensity according to your surroundings. However, this feature can be a hit-and-miss and doesn’t always work well.
1. Go to Settings
If your iPhone keeps dimming, you may have an issue with one of the automatic features that adjust screen brightness. These features are intended to help reduce eyes strains while using your device. However, they can be annoying if you are trying to read an article or watch a video.
To turn off auto dim on your iPhone, you can go to Settings. This will open a menu that includes shortcuts to the most commonly used settings on your device.
In the menu, you will find a toggle to turn off Auto-Brightness. By default, Apple automatically adjusts your display’s brightness based on what it detects from the surrounding environment. This can make your display brighter when you’re in sunlight and darker when you’re indoors or if the ambient light is low.
While this is an excellent feature that can save you battery life, it also makes your screen dimmer, especially when you’re not looking at it. For this reason, you should turn it off if you want to use your iPhone at maximum brightness all day long without worrying about draining your battery.
Another possible cause of your screen dimming is Night Shift, which is a feature that darkens certain parts of your screen at night. This can make your phone easier to see at night, but it also darkens the background of many of your apps and menus.
2. Tap Display & Brightness
Auto dim is a handy feature that automatically adjusts the brightness of your iPhone’s screen, but sometimes it can be frustrating. If you want to prevent it from lowering your screen’s brightness, there are a few things you can do.
The first thing to try is to make sure your phone’s display settings are set up properly. This can be done by going to Settings > General and then scrolling down to Display & Brightness.
If you see the option labeled “Auto-Brightness,” you can toggle it off to prevent your phone from adjusting its brightness. However, this preference is no longer available in iOS 11 or later.
To turn off Auto-Brightness, open Settings and tap Display & Brightness. You’ll find this preference listed on the right side of the screen below Auto-Lock and True Tone.
Another possible cause of your iPhone’s auto-dimming issue is a setting in the Accessibility section of Settings that reduces the white point and brightness of your screen. This is an accessibility feature that’s meant to help blind people use their iPhones more comfortably, but it can also make the screen appear dim if it’s turned on accidentally or a friend has activated it.
It’s worth noting, however, that Apple does recommend using the Reduce White Point feature only in certain lighting conditions, such as dark rooms or in bright sunlight. It’s also best to keep this feature turned off when your iPhone is in storage, as it can eat into battery life.
A third potential cause of your iPhone’s auto-dimming problem is a software problem. Some early iterations of system software releases have bugs that can cause this type of problem, so it’s a good idea to update your iOS version to the latest one.
Lastly, restarting your iPhone can often help eliminate many of these problems. This is a very basic solution that’s usually effective, and it can also reset some of your settings and fix other issues.
3. Tap Auto-Lock
If you’ve ever noticed that your iPhone screen dims randomly, there are a few things that might be causing it. One of those is the Auto-Lock feature, which is designed to lock your iPhone after a set period of inactivity (like 30 seconds).
Another likely cause is Low Power Mode. This is a feature that reduces background activity and battery drain to help your iPhone last longer on a single charge.
The Auto-Lock setting is a useful way to prevent someone from unlocking your phone without your permission or knowledge. However, it can also be a source of frustration.
For instance, if you’re in the middle of an important phone call and the screen goes dim, you might not be able to hear what’s being said or read the text. Luckily, there’s a way to solve this issue:
First, you need to change your Auto-Lock time. This is a quick and easy step that you can do in the settings menu of your iPhone. You can choose from a few different time durations, including 30 seconds, 1 minute, and 5 minutes.
Alternatively, you can also choose to turn off the Auto-Lock option altogether. This is a more permanent solution, but it will mean that your iPhone won’t go to sleep or lock itself until you manually do so.
Finally, you can also turn off True Tone. This option controls the color temperature and intensity of your iPhone’s display based on your surroundings. If you’re using your device in bright sunlight, you might want to disable this feature.
4. Tap True Tone
True Tone is a display feature on the latest iPhones (iPhone 8, 8 Plus, and iPhone X) that adjusts the color temperature and intensity of your screen based on your surroundings. It’s designed to reduce eye strain and make your screen easier on the eyes. However, it can occasionally cause your screen to appear dimmer than it normally is.
If you’re experiencing dimming of the screen when you use your iPhone, you can fix the problem by disabling True Tone. This will keep the screen from fluctuating in brightness and fix the problem for good.
To disable True Tone, tap on the Brightness slider in Control Center or from the settings section.
You can also swipe up from the bottom of your screen to open Control Center on iOS 11. It’s a great way to quickly access features like True Tone, Night Shift, and Dark Mode.