Samsung SPH-A790ZKSXAR - Manual (Page 195)

Section 3D: Sprint PCS International Roaming 186
Activating Closed User Group (GSM)
This network service allows incoming and outgoing calls to be
restricted to a selected user group. For details on how to create and
use a closed user group, contact your service provider.
Example: A company lends SIM cards to its employees and wants to
restrict outgoing calls to members of the same team.
1. From standby mode, press the left for Menu.
2. Highlight Settings and press .
3. Select GSM Services and press .
4. Select Closed User Group and press .
5. Select Index List, Outside Access, or Default Group and press .