1. Find "Set up SIM card lock"
Slide two fingers downwards starting from the top the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-577f3e21-22e1-47c7-a5fb-6c551a6aa716.png?width=214&height=380)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-212b8b0f-d55c-44c7-9ed0-57e916f57934.png?width=214&height=380)
Press Security.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-7d4a934e-8e09-43ab-9a7d-95599b7062bb.png?width=214&height=380)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-04b078b8-694a-4df6-a5ce-b173ecc5c96a.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-5552c45f-8ef1-4119-987b-67489db4ff70.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-b206b4c8-e490-4543-8f3b-380529c74360.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-5552c45f-8ef1-4119-987b-67489db4ff70.png?width=214&height=380)