iOS 17 Guide: How to Enable Auto Brightness on iPhone

Enabling auto brightness on your iPhone running iOS 17 is a breeze. In just a few taps, you can adjust your settings so your phone automatically changes its screen brightness based on the light around you. This means no more squinting at a dim screen in bright sunlight or getting blinded by a too-bright screen in the dark. So, let’s get to it!

You can also watch this video about how to enable auto brightness on an iPhone for more on this subject.

Step by Step Tutorial: Enabling Auto Brightness on iPhone

Before we dive into the steps, it’s important to know that auto brightness is a feature that uses your iPhone’s sensors to adjust the screen brightness for you. It’s perfect for those who want to save battery life or just don’t want to bother with manual adjustments. Let’s get started!

Step 1: Open Your Settings App

Tap on the Settings icon on your iPhone’s home screen to start the process.

Opening your Settings app is like the front door to your iPhone’s many features. It’s where you can tweak and tune your phone to work just right for you.

Step 2: Scroll Down and Tap on Accessibility

Swipe up or down until you find Accessibility, then tap on it to open the menu.

The Accessibility menu might sound like it’s just for folks who need extra help with their iPhones, but it’s actually packed with all sorts of useful tweaks and tools for everyone.

Step 3: Tap on Display & Text Size

In the Accessibility menu, look for the option labeled Display & Text Size and give it a tap.

The Display & Text Size menu is where you can make your iPhone’s screen easier on your eyes by adjusting things like size and color.

Step 4: Find and Toggle on Auto-Brightness

Scroll down until you see the Auto-Brightness option, then switch its toggle to the green ON position.

Flipping this switch is like putting your iPhone’s screen brightness on autopilot. It’ll take care of itself from here on out!

Once you’ve turned on auto brightness, your iPhone will automatically adjust its screen brightness based on the light in your environment. This means you’ll always have the perfect brightness level, whether you’re out in the sun or in a dimly-lit room. And the best part? You won’t have to fiddle with the brightness slider ever again!

Tips: Maximizing Your Experience with Auto Brightness on iPhone

  • Tip: Give it a minute. It might take a few seconds for your iPhone to adjust to the new settings.
  • Tip: Check battery savings. Auto brightness can help conserve your battery life, so keep an eye on your battery usage to see the difference.
  • Tip: It’s not just about brightness. This feature also helps reduce eye strain by ensuring your screen’s brightness is just right.
  • Tip: Manual override is okay. You can still adjust the brightness manually if you need to, and auto brightness will kick back in afterward.
  • Tip: Keep your sensors clean. The auto brightness feature relies on your iPhone’s sensors, so make sure they’re not covered up.

Frequently Asked Questions

Will enabling auto brightness drain my battery faster?

No, in fact, it should help conserve your battery life by ensuring the screen isn’t brighter than it needs to be.

Can I still adjust brightness manually after enabling auto brightness?

Yes, you can. Your iPhone will temporarily override the setting until the next time it needs to adjust the brightness.

What happens if my iPhone isn’t adjusting the brightness automatically?

Make sure your sensors aren’t covered and that you’re running the latest version of iOS. If the problem persists, try restarting your phone.

Does auto brightness work in all apps?

Auto brightness adjusts the overall screen brightness, so it should work across all apps on your iPhone.

Can I turn off auto brightness later if I don’t like it?

Absolutely! Just go back into the settings and toggle it off.


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


There you have it, a simple guide to enabling auto brightness on iPhone with iOS 17. This handy feature takes the guesswork out of adjusting your screen brightness and can even help save some battery life. Whether you’re someone who’s always on the go or just looking for a way to keep your eyes comfortable, auto brightness is a feature worth trying out. Remember to give it a moment to adjust, and don’t be afraid to manually tweak it if needed—your iPhone will smartly revert back to auto adjusting in no time. With these tips and tricks, you’re now ready to make the most out of your iPhone’s display without lifting a finger. So go ahead, give your eyes and battery the break they deserve with iOS 17’s auto brightness feature!

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