1. Find "More security settings"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7070324-f-e36c6d33-3838-46cd-8d48-3cb0949c363a.png?width=206&height=456)
Press Passwords & security.
![](http://wmstatic.global.ssl.fastly.net/ml/7070324-f-df599157-eee8-45de-b2ad-aef46da0828a.png?width=206&height=456)
Press Privacy.
![](http://wmstatic.global.ssl.fastly.net/ml/7070324-f-fcd27c1e-02ac-4bdc-9852-4ad343175f84.png?width=206&height=456)
Press More security settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7070324-f-cb9d27fb-9532-4730-a7c4-40e9eaf0892a.png?width=206&height=456)
2. Turn use of PIN on or off
Press the name of the SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7070324-f-7ab1ff32-9f10-4cc9-81ec-c5c2644e7660.png?width=206&height=456)
Press the indicator next to "Lock SIM card" to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7070324-f-0f40e3fc-01f9-460f-b1f1-8909741d45fd.png?width=206&height=456)
Key in your PIN and press OK.
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. The PUK can be obtained by contacting customer services. 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/7070324-f-2c73ad39-cdd4-4570-8185-1392d487039e.png?width=206&height=456)
3. Return to the home screen
Press the Home key to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7070324-f-0f40e3fc-01f9-460f-b1f1-8909741d45fd.png?width=206&height=456)