How to Change Screen Brightness on iOS 27

Adjust the brightness slider in Settings > Display & Brightness to make your iPhone screen brighter or dimmer.

Step 1

Open Settings from the Home Screen

Before you begin: An unlocked iPhone running iOS 27.

Find and tap the Settings app on your Home Screen. Its icon looks like a gray gear.

Step 2

In Settings, scroll if needed and tap Display & Brightness.

Step 3

Drag the brightness slider right to brighten the screen or left to dim it. Choose a comfortable level for your surroundings.

By ProgramGuru

Published: 2026-10-14

Updated: 2026-10-14

Instructions reviewed against Apple documentation on 2026-10-14.