Samsung SGH-I780 User Manual page 100

Fixed Dialling Numbers (FDN) mode
When this option is enabled, your phone restricts your
outgoing calls to a limited set of phone numbers, which are
stored on the SIM card.
To enable the FDN list:
1. From the Start menu, tap Settings → Personal tab →
Phone.
2. In the More tab, tap Fixed Dialing → Get settings...
3. Select Enabled from the FDN (Fixed dialing number)
field and tap
4. Enter PIN2 and tap
5. Tap when a confirmation message appears.
PIN2 change
This option allows you to change your current PIN2 to a
new one. You must enter the current PIN2 before you can
specify a new one.
1. From the Start menu, tap Settings → Personal tab →
Phone.
2. In the More tab, tap Change PIN2 → Get settings.
3. Enter the old PIN2, then a new one, and re-enter the
new PIN2 for confirmation.
4. Tap .
.
.
Call functions
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