How to Adjust iPhone 13 Auto Brightness Setting: A Step-by-Step Guide

Adjusting the auto brightness setting on your iPhone 13 is a breeze. Simply go into your settings, tap on accessibility, then display & text size, and toggle the auto-brightness switch. Voila! You’re all set to enjoy a screen brightness that automatically adjusts to your environment.

Step by Step Tutorial: Adjust iPhone 13 Auto Brightness Setting

Before we dive into the nitty-gritty, let’s clarify what we’re about to accomplish. Adjusting the auto brightness on your iPhone 13 ensures that your screen’s brightness levels adapt to the lighting conditions around you. This not only makes for a more comfortable viewing experience but can also help conserve battery life.

Step 1

Open the Settings app on your iPhone 13.
The Settings app is where all the magic happens. It’s your go-to place for customizing your iPhone to your liking.

Step 2

Scroll down and tap on Accessibility.
Accessibility features are designed to make your iPhone easier to use. But they’re also where you’ll find the auto brightness setting.

Step 3

Tap on Display & Text Size.
This section contains settings that affect how things look on your screen, making them easier to see or read.

Step 4

Scroll down to the bottom and toggle the Auto-Brightness switch to ON.
When the switch is green, you’ll know auto brightness is active. It’s that simple!

After you’ve completed these steps, your iPhone 13 will automatically adjust the screen brightness based on the ambient light around you. Whether you’re out in the sun or in a dimly lit room, your screen will always be just right, without you having to lift a finger.

Tips: Maximize Your iPhone 13 Auto Brightness Experience

  • Keep your iPhone’s sensors unobstructed. These sensors measure the light around you and are crucial for auto brightness to work correctly.
  • Give it a moment. Sometimes it takes a second or two for the brightness to adjust.
  • Manually adjust the brightness if needed. Auto brightness doesn’t mean you can’t tweak it yourself in the Control Center.
  • Consider your battery life. Auto brightness can help save battery by reducing brightness in darker environments.
  • Don’t forget about Night Shift. It adjusts your screen’s colors for a warmer, less blue light in the evenings.

Frequently Asked Questions

What is auto-brightness?

Auto-brightness is a feature that adjusts your iPhone’s screen brightness based on the ambient light in your surroundings.

Can I still adjust my brightness manually with auto-brightness turned on?

Yes, you can. Auto-brightness is designed to assist you, but you can always make manual adjustments in the Control Center.

Will auto brightness drain my battery?

On the contrary, using auto brightness can actually help conserve your battery since it reduces brightness in darker environments.

Why isn’t my auto brightness working?

Make sure that the sensors at the top of your iPhone are not covered. Cases, screen protectors, or dirt can sometimes block these sensors.

Can I turn off auto brightness?

Absolutely. If you prefer to control brightness yourself, simply toggle off the auto brightness switch.


  1. Open the Settings app.
  2. Tap on Accessibility.
  3. Select Display & Text Size.
  4. Turn on Auto-Brightness.


Adjusting the auto brightness setting on your iPhone 13 is more than just a convenience feature; it’s a smart way to keep your digital life in tune with your physical environment. Not only does it make for a much more comfortable viewing experience, it’s also a savvy move for extending your battery life. Plus, with the ability to tweak the brightness manually, you’re always in control. Embrace the brilliance of auto brightness, and let your iPhone light the way, no matter where you are or what you’re doing. It’s yet another small but significant way that your iPhone 13 can make life just a little bit easier.