1. Find "SIM PIN"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-441da185-c82c-4086-b613-9bb60500f9c5.png?width=206&height=448)
Press Mobile Service.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-e9d48bac-e04e-48dc-8e9e-57c8e01d5ed9.png?width=206&height=448)
Press SIM PIN.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-05d14f51-fc46-48b2-b502-e763eef4c214.png?width=206&height=448)
2. Turn use of PIN on or off
Press the indicator next to "SIM PIN" to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-30d51ad6-67b5-4853-a815-03a40753077f.png?width=206&height=448)
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. 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.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-d59fda0d-13c7-4db5-9521-2fbd561d19a8.png?width=206&height=448)
3. Return to the home screen
Slide your finger upwards starting from the bottom of the screen to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-30d51ad6-67b5-4853-a815-03a40753077f.png?width=206&height=448)