1. Find "Set up SIM card lock"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-1108d468-5a18-4fdb-abd7-038619c49ae9.png?width=214&height=380)
Press Advanced settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-a4f1fe13-2152-4e41-b51f-d12ee8424e7e.png?width=214&height=380)
Press Security.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-c0d5d785-08d2-4bde-9108-3fa50bbeaa95.png?width=214&height=380)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-89b8cf4f-3069-47ba-b78f-d15079fd6d98.png?width=214&height=380)
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-a8d6859e-6eb8-4523-a582-b044407c42be.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-9cdcac48-4027-4137-b5d0-7a96727aee32.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-a8d6859e-6eb8-4523-a582-b044407c42be.png?width=214&height=380)