1. Find "SIM PIN"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-5c4a42b6-50a6-488b-a367-d138066b9bbd.png?width=210&height=458)
Press Mobile Service.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-66b50edf-392c-48c6-8469-400173cb7d6d.png?width=210&height=458)
Press SIM PIN.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-e34a2179-b98e-4258-86ab-b9381c9effcc.png?width=210&height=458)
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-8a41cfdc-85b0-4379-82fa-3c1609461158.png?width=210&height=458)
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-48289f1c-000b-4308-8b6c-b36db5f5496c.png?width=210&height=458)
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-8a41cfdc-85b0-4379-82fa-3c1609461158.png?width=210&height=458)