Turning off auto brightness on your iPhone 15 is a breeze and can give you better control over your screen’s brightness. By following a few simple steps in your device’s settings, you can manually adjust the brightness to suit your needs and save battery life. Here’s a quick guide on how to do it.
Turn Off Auto Brightness on iPhone 15
Ready to take control of your iPhone 15’s screen brightness? These steps will help you turn off the auto brightness feature, so you can set the brightness exactly how you like it.
Step 1: Go to Settings
Open the “Settings” app on your iPhone 15 by tapping the gear icon.
In the Settings app, you’ll find a variety of options to customize your device. This is where you can access all the essential features of your iPhone.
Step 2: Select Accessibility
Scroll down and tap “Accessibility.”
Accessibility settings are designed to make your iPhone easier to use. Within these settings, you can adjust many features to your liking.
Step 3: Tap Display & Text Size
Choose “Display & Text Size” from the Accessibility menu.
This section allows you to modify how text and images appear on your screen, giving you more control over your visual experience.
Step 4: Turn Off Auto-Brightness
Scroll to the bottom and toggle off “Auto-Brightness.”
By disabling this option, your iPhone will stop automatically adjusting the screen brightness based on ambient light. You’ll have the freedom to set it manually.
Once you turn off auto brightness, your screen will maintain the brightness level you set until you decide to change it again. This can help you manage how bright or dim your screen is, depending on your surroundings.
Tips for Turning Off Auto Brightness on iPhone 15
- Consider your battery life: Lower brightness can save battery power.
- Adjust manually: Swipe down from the top right corner to access the Control Center and adjust brightness quickly.
- Remember your eyes: Use Night Shift to reduce blue light in the evening.
- Find your perfect level: Experiment with different brightness levels in various lighting conditions.
- Re-enable if needed: You can always turn auto brightness back on by following the same steps.
Frequently Asked Questions
What is auto brightness?
Auto brightness adjusts your screen’s brightness automatically based on your surrounding light.
Why turn off auto brightness?
Turning it off gives you more control over your screen’s brightness and can help save battery.
Does turning off auto brightness affect battery life?
Yes, lower brightness levels can extend battery life, while higher levels may drain it faster.
How can I quickly adjust brightness manually?
Use the Control Center by swiping down from the top right corner of your screen.
Can I turn auto brightness back on?
Absolutely! Follow the same steps to re-enable it in your settings.
Summary
- Go to Settings.
- Select Accessibility.
- Tap Display & Text Size.
- Turn Off Auto-Brightness.
Conclusion
Now that you know how to turn off auto brightness on your iPhone 15, you can tailor your screen’s brightness to fit your personal needs. Whether you want to save battery life or simply prefer a specific brightness level, these simple steps put you in control.
Feeling more adventurous? Explore other features in the Accessibility settings to see how you can further customize your device. Technology should work for you, not the other way around.
As you become more familiar with your iPhone, you’ll find plenty of ways to tweak your device to fit your lifestyle. Whether it’s through adjusting brightness or discovering new features, your iPhone is a powerful tool waiting to be customized.
Give it a try today, and see how a small change like turning off auto brightness can make a big difference in your daily phone experience. Keep exploring, and happy customizing!

Matt Jacobs has been working as an IT consultant for small businesses since receiving his Master’s degree in 2003. While he still does some consulting work, his primary focus now is on creating technology support content for SupportYourTech.com.
His work can be found on many websites and focuses on topics such as Microsoft Office, Apple devices, Android devices, Photoshop, and more.