Lock code
The lock code (5 to 10 digits) helps to protect your phone against
unauthorized use. The preset code is 12345. Change the code, and keep
the new code secret and in a safe place separate from your phone. To
change the code, and to set the phone to request the code, see
“Security,” p. 94.
If you enter an incorrect lock code five times in succession, the phone
ignores further entries of the code. Wait for 5 minutes, and enter the
code again.
When the device is locked, calls may be possible to the official emergency
number programmed into your device.