1. Find "Set up SIM card lock"
Slide your finger downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-9717f731-0bbb-41a4-a428-d88e63b8cad1.png?width=214&height=380)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-143a935c-6c46-4dc4-892c-978ef52e4370.png?width=214&height=380)
Press Lock screen and security.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-3505f769-a3d3-499a-ada7-1cb171f12636.png?width=214&height=380)
Press Other security settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-904d834b-ea6a-4968-a43e-9ab90eea83d1.png?width=214&height=380)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-dfd4cee4-383c-43b7-bc2e-f73011bfe843.png?width=214&height=380)
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/7140723-f-84b163fd-325d-432d-ac88-03109d9c5ed2.png?width=214&height=380)
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-13800a6d-44b8-4684-9d93-1a320f3ec1fa.png?width=214&height=380)
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-84b163fd-325d-432d-ac88-03109d9c5ed2.png?width=214&height=380)