1. Find "SIM PIN"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7181024-f-8e0282e2-4212-498e-ba76-586d59bdd398.png?width=210&height=456)
Press Mobile Service.
![](http://wmstatic.global.ssl.fastly.net/ml/7181024-f-8d9d31e1-99c6-4c0d-bdf4-f0f38a737d96.png?width=210&height=456)
Press SIM PIN.
![](http://wmstatic.global.ssl.fastly.net/ml/7181024-f-76836f88-008e-4345-bdee-1b8ec6ffa9ae.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/7181024-f-cbffd213-3052-4de5-beb5-0513c35ea475.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/7181024-f-6226edfc-885a-427e-b2cc-5b077e6fbfc2.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/7181024-f-cbffd213-3052-4de5-beb5-0513c35ea475.png?width=210&height=456)