Panasonic EB-X300 - Manual (Page 97)

94 Phone Menu
Changing PIN/PIN2:
You must enable the PIN before changing the code.
From Phone Menu
1.
4 Security A (Select)
2. 4 Codes A (Select)
3. 4 Change PIN or Change PIN2 A (Select)
4. Enter the current code A (OK)
5. Enter the new code A (OK)
6. Enter the new code to verify A (OK)
NOTE: To enter the PUK code for your PIN, enter **05#. You will then
be prompted to enter the PUK code. Follow the on-screen
instructions. To enter the PUK2 code for your PIN2, enter **052#. You
will then be prompted to enter the PUK2 code. Follow the on-screen
instructions. If the PUK/PUK2 code is entered incorrectly 10 times, the
phone will cease to operate permanently. All information stored in the
SIM will be lost and the SIM will need to be replaced. Contact the
service provider for more details.