1. Find "Set up SIM card lock"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-716aed74-41f0-4177-9acb-c2dd54c295b1.png?width=206&height=368)
Press Advanced settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-593baed7-7f15-45e3-a667-a34b750d9a37.png?width=206&height=368)
Press Security.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-2ea17c8d-677b-4cbe-a915-7e09a221da9e.png?width=206&height=368)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-defd6444-7c53-4cd2-8e89-c279b21ce414.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-34a3f5f8-9a47-45cb-a7a7-508a514cafaf.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-3eacf443-4d5a-4b6f-957f-d24da4eb76fd.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-34a3f5f8-9a47-45cb-a7a7-508a514cafaf.png?width=206&height=368)