Samsung Galaxy S III User Manual page 317

Note: Your device visibility is based on the time set within the Visible
time-out field (2 Minutes, 5 Minutes, 1 Hour, or Never timeout).
Press
This value appears as a countdown within this Visible
time-out field.
To scan for Bluetooth devices:
1. Verify Bluetooth is active.
2. From the bottom of the Bluetooth settings page, tap Scan to
search for visible external Bluetooth-compatible devices such
as headsets, devices, printers, and computers.
To review your Bluetooth received files:
1. Verify Bluetooth is active.
2. From the Bluetooth settings page, press
Received files.
(Menu) Visible time-out.
and then tap
Connections 309