Doro 6520
1. Find "PIN"
Press the Navigation key.
Select Settings.
Select Security.
Select Passwords.
Select PIN.
2. Change PIN
Key in your current PIN and press the Navigation key.
Key in a new four-digit PIN and press the Navigation key.
Key in the new PIN again and press the Navigation key.
If an incorrect PIN is entered three times in a row, your SIM will be blocked. To unblock your SIM, you'll need to key in your PUK. You can get the PUK by calling customer services on 191 from a Vodafone mobile phone. If you're using a land line, you need to dial 03333 040 191. Please note: If you key in the wrong PUK ten times in a row, your SIM will be blocked permanently. In this case, you need a new SIM from Vodafone.
3. Return to the home screen
Press Disconnect to return to the home screen.