1. Find "Set up SIM card lock"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-4a3e224f-1907-4f9b-8062-4433f22405fd.png?width=210&height=372)
Press All.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-b0948c61-ae47-449e-819b-1e4c783499be.png?width=210&height=372)
Press Security.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-b6c2045d-586a-41f8-961b-420771441d21.png?width=210&height=372)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-59ae2e50-eefd-4a9c-bf5b-9ac5a38828ca.png?width=210&height=372)
2. Turn use of PIN on or off
Press Lock SIM card to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-cf4fb8bb-af6d-4e5f-8015-63f356726108.png?width=210&height=372)
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-69248b5d-7773-4304-acda-998c95779ca1.png?width=210&height=372)
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-cf4fb8bb-af6d-4e5f-8015-63f356726108.png?width=210&height=372)