1. Find "Set up SIM card lock"
Slide two fingers downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7210823-f-7b615281-013b-4b30-807d-70d15fc217a7.png?width=214&height=458)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7210823-f-1be6eac2-abf7-4cce-ad40-b571105fe496.png?width=214&height=458)
Press Security and privacy.
![](http://wmstatic.global.ssl.fastly.net/ml/7210823-f-26cebca5-36c5-434a-b39f-0941878a8c07.png?width=214&height=458)
Press Other security settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7210823-f-f3612fff-f73d-4db0-9647-ae327c29a530.png?width=214&height=458)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7210823-f-effa6483-e6fe-4e3b-87f0-b1a7e55d337a.png?width=214&height=458)
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/7210823-f-2acbc7f5-6300-4354-8fba-49e498c8a258.png?width=214&height=458)
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/7210823-f-e86d3553-efff-406d-b4b8-909118ea9045.png?width=214&height=458)
3. Return to the home screen
Press the Home key to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7210823-f-2acbc7f5-6300-4354-8fba-49e498c8a258.png?width=214&height=458)