Samsung SCH-a870 Series User Manual page 198

1. In standby mode, press the Menu (left) soft key (
then press
Settings), and
The "Enter Code" 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 "Enter Code" prompt disappears and the Security
menu appears in the display.
3. Press
the New Lock Code.
4. Enter the New Lock Code. You're prompted to re-enter
the New Lock Code for verification.
5. Enter the new lock code again. Your changes are stored.
Note: Your phone does not allow you to view the lock code for obvious
security reasons. If you change the lock code, be sure to write down or
memorize the new code.
Emergency #
You have the option of storing up to three emergency
numbers to your phone. Each number can be up to 32
digits in length. All emergency numbers can be dialed
any time, even when your phone is locked or restricted.
Note: Emergency number 911 is hard-coded into your phone. You can dial
this number any time, even when the phone is locked or restricted. If you
call 911 an audible tone is heard and an Emergency prompt appears in the
display for the duration of the call.
198
(for Settings),
wxyz
for Security.
ghi
for Change Lock. You're prompted to enter
abc
(for Phone
jkl
),