1. Find "SIM PIN"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-911dd421-ecd3-45da-8e75-21031e9b5c90.png?width=210&height=456)
Press Mobile Service.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-22319836-64f3-4af9-9862-703150399a4b.png?width=210&height=456)
Press SIM PIN.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-53df44ca-1800-458f-aa3a-1279c4b60c6f.png?width=210&height=456)
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-2dbff53f-7410-4165-9b32-9187f9f607a5.png?width=210&height=456)
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-8ed44adb-84eb-4d0d-98d1-c6cfee0338f6.png?width=210&height=456)
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-2dbff53f-7410-4165-9b32-9187f9f607a5.png?width=210&height=456)