1. Find "SIM PIN"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-c0bcc280-abf2-4de8-b367-e5e4f9abe776.png?width=212&height=458)
Press Mobile Service.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-f6fa2fdb-ae9a-4417-bcb7-d8c5cbb08fac.png?width=212&height=458)
Press SIM PIN.
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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-dc3f1a6d-6c0c-4818-9ff4-2daabc65478a.png?width=212&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-206b4ff2-75e3-4fed-852f-a714c7c2c46e.png?width=212&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-dc3f1a6d-6c0c-4818-9ff4-2daabc65478a.png?width=212&height=458)