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-e4104666-cfae-4a73-852a-06f55f906bfc.png?width=206&height=368)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-cb28a6d2-03ab-4122-b037-9688c51ef7c0.png?width=206&height=368)
Press Lock screen and security.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-0f0ab07f-4f01-436f-b8e0-223fdb318345.png?width=206&height=368)
Press Other security settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-e18da598-ca43-4c6c-82a3-e4fa1a191345.png?width=206&height=368)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-2323869c-b673-4d9d-89a9-b534828d3837.png?width=206&height=368)
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-ce5e6200-7c57-4294-85bd-72a2ffe0b929.png?width=206&height=368)
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-cad6bcb8-4daf-4cbd-b45a-9770ba3eb002.png?width=206&height=368)
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-ce5e6200-7c57-4294-85bd-72a2ffe0b929.png?width=206&height=368)