1. Find "SIM PIN"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7070225-f-c9f6d450-0ffd-453c-8db4-1937b8764169.png?width=296&height=396)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7070225-f-bea7d1f7-b41d-4245-a65f-2da287ba5f5c.png?width=296&height=396)
Press the info icon next to the required price plan below "MOBILE PLANS".
![](http://wmstatic.global.ssl.fastly.net/ml/7070225-f-750de546-10ce-4700-b55b-2a8037f6dc50.png?width=296&height=396)
Press SIM PIN.
![](http://wmstatic.global.ssl.fastly.net/ml/7070225-f-5a218641-f0b2-436a-81a9-d91acd12c7af.png?width=296&height=396)
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/7070225-f-4d2d7f68-616f-4877-b60f-b0a523e44155.png?width=296&height=396)
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/7070225-f-b3d8031e-1653-4d27-bbe7-bd565a150e54.png?width=296&height=396)
3. Return to the home screen
Press the Home key to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7070225-f-4d2d7f68-616f-4877-b60f-b0a523e44155.png?width=296&height=396)