Samsung Galaxy S III User Manual page 22

Rotate
For most screens, you can automatically change the screen orientation from portrait to landscape by
turning the phone sideways. When entering text, you can turn the phone sideways to bring up a bigger
keyboard.
Note: The Auto rotate check box needs to be selected for the screen orientation to automatically change.
To make this selection, press
rotate screen. See Auto Rotate Screen
Pinch and Spread
"Pinch" the screen using your thumb and forefinger to zoom out or "spread" the screen to zoom in when
viewing a picture or a Web page. (Move fingers inward to zoom out and outward to zoom in.)
Phone Basics
and then tap > Settings > My device > Display > Auto
for more information.
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