Samsung SCH-A670ZSUXAR - Manual (Page 179)

Section 13: Changing Your Settings 179
Security Settings
Section 13
3. Press for Lock Phone. The following options appear
in the display:
ⅷ Never—The phone remains unlocked.
ⅷ On power up—The phone locks automatically the next time
your phone is powered on and stays locked until you enter the
lock code.
ⅷ Now—The phone locks immediately and stays locked until
you enter the lock code.
4. Use the navigation keys to highlight the Lock Phone
option of your choice.
5. Press to perform the function for the highlighted
option.
Important! If you change the NAM1 setting after setting the phone to lock
upon power-up and did not program a number into NAM2, you won’t be
able to access your phone. You must call the Service Center to unlock your
phone.
Change Lock
The default lock code is generally the last four digits of
your phone number. It is advisable to change the
default lock code to a secret code for security purposes.
1. In standby mode, press the Menu (left) soft key ( ),
then press (for Setup) and for Security.
The Lock prompt appears in the display.
2. Enter the four-digit lock code using the keypad.
Note: The default lock code is the last four digits of your mobile phone
number.
The Lock prompt disappears and the Security menu
appears in the display.