1. Find "SIM PIN"
Press Settings.
Press Phone.
Press SIM PIN.
2. Turn use of PIN on or off
Press the indicator next to "SIM PIN" to turn the function on or off.
Key in your PIN and press Done.
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. The PUK can be obtained by contacting customer services. 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 the Home key to return to the home screen.