1. Find "Privacy"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-32c75d03-10b2-4797-abef-3a36148e6379.png?width=204&height=456)
Press Passwords & security.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-c9de2027-27b6-4d24-991b-f17417646beb.png?width=204&height=456)
Press Privacy.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-52809dbc-5092-4e73-8953-af961d9f4a43.png?width=204&height=456)
2. Turn use of PIN on or off
Press the name of the SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-e695904e-3d33-4931-94f4-9bd740739d1b.png?width=204&height=456)
Press the indicator next to "Lock SIM card" to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-61066d7a-8c7f-4112-8444-2520a7e2e67f.png?width=204&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/7140723-f-632c5e92-b6ba-4250-bf8d-f6de102f5dc8.png?width=204&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/7140723-f-61066d7a-8c7f-4112-8444-2520a7e2e67f.png?width=204&height=456)