1. Find "SIM card security"
Slide two fingers downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7050224-f-c2803b3e-c875-49fc-923e-2dc4a4150749.png?width=214&height=462)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7050224-f-97db32a7-1f39-425f-93ee-7f6dc721ccdb.png?width=214&height=462)
Press Security and privacy.
![](http://wmstatic.global.ssl.fastly.net/ml/7050224-f-cd1da41c-a409-46f6-af9f-3e86c47fbf4c.png?width=214&height=462)
Press More security settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7050224-f-19c35537-c614-472e-b348-54a4e011ecdc.png?width=214&height=462)
Press SIM card security.
![](http://wmstatic.global.ssl.fastly.net/ml/7050224-f-7cb61ba1-08aa-4868-b066-c9d48ffb1527.png?width=214&height=462)
2. Turn use of PIN on or off
Press the indicator next to "Lock SIM card" to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7050224-f-a5fb48a7-cb12-44d7-9d0e-4fa4b40844a0.png?width=214&height=462)
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/7050224-f-8f94724a-de3c-4c2c-b64a-0605e296d0e6.png?width=214&height=462)
3. Return to the home screen
Press the Home key to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7050224-f-a5fb48a7-cb12-44d7-9d0e-4fa4b40844a0.png?width=214&height=462)
How would you rate your experience?
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![](/Content/images/design_assets/vf-fb-logo.png)