Samsung SCH-A570NBUXAR - Manual (Page 104)

Sect
ion 8
104
2. 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 locked code.
3. Use the navigation keys to highlight the Lock Phone
option of your choice.
4. Press the key to perform the function for the
highlighted option.
Change Lock
The default lock code for your phone 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 key, then press
(for Settings) and for Security. You’re prompted to
enter the lock code.
Note: The default lock code is the last four digits of your telephone number.
2. Press for Change Lock. You’re prompted to enter
the new lock code.
3. Enter the new lock code. You’re prompted to re-enter the
new lock code for verification.
4. Enter the new lock code again. Your changes are stored.