Samsung Galaxy S III User Manual page 32

Tap to top
Tap on the top of the phone twice, quickly.
•
Tap to top: When this setting is On, a double tap on the top of the
phone takes you to the top of a list.
Tilt
Touch and hold with your thumbs on the screen; then tilt the
phone forward and back to zoom in or out.
•
Tilt to zoom: When this setting is On, tilting the phone while in
Gallery or Internet causes the screen to zoom in or out.
Understanding Your Phone 25