All iPhone settings
Settings Pathfinder · iPhone
Auto-Brightness
Lets iPhone adjust screen brightness for current light conditions using its built-in ambient light sensor.
In iOS 26
Settings then Accessibility then Display & Text Size then Auto-Brightness
“Go to the Settings app on your iPhone. Tap Accessibility, tap Display & Text Size, then turn on Auto-Brightness.” — Apple User Guide
Where it has lived
-
iOS 17 and later
Settings then Accessibility then Display & Text Size then Auto-Brightness
Checked against Apple's User Guides from iOS 17 onward. Menus can differ slightly by region, language, model and installed apps.
Sources for this page
Last verified 8 Oct 2026
- 1 Adjust the screen brightness and color on iPhone - Apple Support support.apple.com · guide for version 17.0
- 1 Adjust the screen brightness and color on iPhone - Apple Support support.apple.com · guide for version 18.0
- 1 Adjust the screen brightness and color on iPhone - Apple Support support.apple.com · guide for version 26
- 1 Adjust the screen brightness and color on iPhone - Apple Support support.apple.com · current guide