Samsung Galaxy S III User Manual page 312

2. Tap the ON/OFF slider to turn S Beam on. Turning S Beam on automatically turns NFC on.
 S Beam is enabled.
3. With the item (such as a photo) is displayed on your phone, touch the back of your phone to the
back of the other device.
4. Once the phone vibrates, tap the screen to beam the item to the other device.
Settings 303