Security Features; Access Codes Overview; Lock Code; Security Code - Nokia 5160 Owner's Manual

13. Security features

Access codes overview

Access codes consist of the lock code and security code.
When you get your phone, you should change these codes
from their defaults, write down the new codes, and keep
them in a safe place away from the phone. Avoid using
access codes that are similar to emergency numbers, such as
911, to prevent accidental dialing of the emergency number.

Lock code

Your phone's lock code is used to lock and unlock your
phone. The default lock code is 1234. Use 0HQX 4 3 2 3 to
change the lock code.
When the phone requires the lock code, it displays (QWHU
ORFN FRGH= Enter the code, then press 2. .
If you enter a wrong lock code five times in succession, your
phone prompts you for the security code.

Security code

The security code is required to restrict calls and to restore
factory settings. The default security code is 12345. Use
0HQX 4 3 2 4 to change the security code.
When the phone requires the security code, it displays
6HFXULW\ FRGH= Enter the code, then press 2. .
If you enter an incorrect security code five times in
succession, the phone will not accept any input for the next
five minutes.

Restricting calls

Use 0HQX 4 3 1 to restrict outgoing or incoming calls. This is
handy if you want to lend your phone to someone but don't
want them to make long-distance or other expensive calls.
51