1. Find "SIM card lock"
Slide two fingers downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7100822-f-468fd102-21df-4f18-a600-788162732527.png?width=198&height=406)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7100822-f-700c8c87-d969-4b06-a0d1-a747825d2ac2.png?width=198&height=406)
Press Security.
![](http://wmstatic.global.ssl.fastly.net/ml/7100822-f-e22f6c79-0f70-490b-bce4-83b82444f40a.png?width=198&height=406)
Press SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7100822-f-8618f6b6-d57f-419f-b291-1de6295adefb.png?width=198&height=406)
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/7100822-f-fa7d8a4f-4e58-4da3-8a63-8c1bb5918151.png?width=198&height=406)
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/7100822-f-4b5c172a-4ce1-4d99-8eca-69a6e8c920b0.png?width=198&height=406)
3. Return to the home screen
Press the Home key to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7100822-f-fa7d8a4f-4e58-4da3-8a63-8c1bb5918151.png?width=198&height=406)
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![](/Content/images/design_assets/vf-fb-logo.png)