1. Find "SIM PIN"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-f44299dc-4f7a-4300-9782-d4e0bd965755.png?width=212&height=458)
Press Mobile Service.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-f65d0f07-b716-44a4-b09c-b5af5e7cd0ae.png?width=212&height=458)
Press SIM PIN.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-db435c30-31b3-462f-b32d-efe009dfe30c.png?width=212&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-97bad78b-e22e-4566-8572-d5b53170e0c2.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-c969c662-5773-4476-8a92-2dbddc71663b.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-97bad78b-e22e-4566-8572-d5b53170e0c2.png?width=212&height=458)