Think about the times you max out that slider while sharing a friend's story on Instagram or chatting with your contacts on Group FaceTime. The first number is referred to as "typical" since it's the brightness max you reach during typical use. Unbeknownst to much of the iOS public, many iPhones actually have two different maximum brightness levels that depend on what's being displayed on the device. However, depending on your iPhone model, your display may be capable of getting a lot brighter based on how you use it. But once you max it out, it doesn't seem like the display can get any brighter. And if you are looking for a new screen protector, you can check out the best screen protectors for the iPhone 13 and iPhone 12 lineup right here.When you want to brighten up your iPhone's screen, you likely use Control Center's brightness slider to increase your nits (especially if you've disabled auto-brightness).
If it does, your screen protector, and not your iPhone, was at fault. Once you have removed the screen protector, check if the screen brightness automatically adjusts according to the light conditions of your surroundings. If the issue is persistent, there is a possibility that it could be due to your screen guard. Not many screen guards come with laser-cut dimensions (especially the cheaper ones). No solution above helped resolve the auto-brightness not working issue on your iPhone? Well, try removing the screen protector.
Then, turn on the Auto-Brightness toggle once again.īy removing random cache and temporary files, a hard reset is often able to resolve common iOS issues that might cause software features like auto-brightness to not work as intended on your iPhone.
So, be sure to try out this simple yet efficient trick. If a dirty ambient light sensor is what was causing the auto-brightness not working issue on your iPhone, it should be fixed now.Īt times, a soft reset is all you need to resolve the auto-brightness problem on your iOS device.
You can use a soft lint-free cloth to clean the screen to ensure there is no gunk on/ around the sensor. The built-in ambient light sensor is located at the top of the iPhone’s screen in the True Depth Face ID camera system (or famously known as the notch). The first thing you should do to fix the ill-functioning ambient sensor on your iPhone is to clean the area around it. Besides all these reasons, a miscellaneous software bug could always cause the ambient sensor to glitch out and the auto-brightness not working issue on your iPhone.īest Tips to Fix Auto-Brightness Not Working on iPhone 1.
For instance, the issue could be due to a faulty or cracked screen protector, dust clogging the ambient light sensor, or a cheap third-party iPhone display replacement. There are several reasons that could be causing the auto-brightness to stop working on your iPhone.