July 09, 2012, 3:08 PM — Here's how you can change your screen brightness settings on the Samsung Galaxy S3 phone to save battery power.
1. Go to Settings.
2. Go to Display.
3. Go to Brightness.
4. Click the checkbox for Automatic Brightness.
5. You may also wish to adjust the brightness yourself by moving the slider until it's at the level you prefer
For more, see the original article at the link below.