Samsung Galaxy S III User Manual page 324

Connecting as a Storage Device
You can connect your device to a PC as a removable disk and access
the file directory. If you insert a memory card in the device, you can
also access the files directory from the memory card by using the
device as a memory card reader.
Note: The file directory of the memory card displays as a removable
disk, separate from the internal memory.
1. Connect the USB cable to the device and connect the cable to
the computer. After a few seconds, a pop-up window displays
on the PC when connected.
2. Open the folder to view files.
3. Copy files from the PC to the memory card.
Prior to using Kies air for Phone Update
Before using Kies air to upgrade your device, it is recommended that
you backup your personal data prior to use.
To export a Contact list to your microSD card:
1. From the Home screen, tap
2. Press
3. Tap Export to SD card
316
and then tap Import/Export.
OK.
(Contacts).