Samsung SGH-E316CSAAWS - Manual (Page 127)

Phone Settings
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The following options are available:
Disable: you can call any number.
Enable: you can only call phone numbers stored in
Phone Book. 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 to a new one. You must enter the current
PIN2 before you can specify a new one.
Once you have entered a new PIN2, you are asked
to confirm it by entering it again.
Note: Not all SIM cards have a PIN2. If your SIM card
does not, this menu does not display.
Extra Settings
You can turn the automatic redialing or answering
features on or off.
The following options are available:
To turn a feature Press the
on On soft key.
A check mark displays in front of the
option.
off Off soft key.
The check mark no longer displays.