Samsung SGH x426 User Manual page 88

The password is preset to "00000000" at the factory. Once
you have entered a new password, you are asked to re-
enter it for confirmation.
FDN Mode
FDN (Fixed Dial Number) mode, if supported by your
SIM card, allows you to restrict your outgoing calls to a
limited set of phone numbers.
The following options are available:
Disable: you can call any number.
Enable: you can only call phone numbers stored in the
Phonebook. You must enter your PIN2.
Note: Not all SIM cards have a PIN2. If your SIM card does
not, this menu does not display.
Change PIN2
The Change PIN2 feature allows you to change your
current PIN2. You must enter the current PIN2 before
you can specify a new one.
Once you have entered a new PIN2, you are asked to re-
enter it for confirmation.
Note: Not all SIM cards have a PIN2. If your SIM card does
not, this menu does not display.
84 Phone Settings
(Menu 4.5.5)
(Menu 4.5.6)