1. Find "SIM card lock"
Slide two fingers downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7260424-f-3a82a676-e2a8-4e89-b67e-532757e20ba2.png?width=198&height=444)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7260424-f-0a2fc424-7cac-455c-9707-3cdac885c535.png?width=198&height=444)
Press Security.
![](http://wmstatic.global.ssl.fastly.net/ml/7260424-f-a4b254e3-bb2b-4380-a360-0c71e1421848.png?width=198&height=444)
Press SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7260424-f-c9cf9646-a3f1-477e-90bb-ac7f5ba50f09.png?width=198&height=444)
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/7260424-f-c993759f-97e4-48f1-ab6d-d1a0ba37c265.png?width=198&height=444)
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/7260424-f-7206ccb7-be40-40fb-8647-84bfb0cfa009.png?width=198&height=444)
3. Return to the home screen
Press the Home key to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7260424-f-c993759f-97e4-48f1-ab6d-d1a0ba37c265.png?width=198&height=444)
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