1. Find "Set up SIM card lock"
Slide two fingers downwards starting from the top the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7291123-f-7486cbf9-a585-4936-925d-c719d30bb707.png?width=252&height=402)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7291123-f-664ab481-eb75-466a-a00c-bf591602e7d9.png?width=252&height=402)
Press Security.
![](http://wmstatic.global.ssl.fastly.net/ml/7291123-f-6c2f1b96-0078-449d-9d8b-e5a6dbb57ecd.png?width=252&height=402)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7291123-f-19e41a05-4489-44f0-8a10-83ba8164e9d5.png?width=252&height=402)
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/7291123-f-2cb93e60-917e-4f82-aa7d-85a848ccc2da.png?width=252&height=402)
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/7291123-f-72e451fd-ed9a-46f9-9bc0-34597d35fc35.png?width=252&height=402)
3. Return to the home screen
Press the Home key to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7291123-f-c58fa604-e544-4fb5-9a91-bbb81f305e53.png?width=252&height=402)