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-0378fe2c-3fe4-4408-a236-6c636c623958.png?width=210&height=372)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-39ada35b-fec4-44c9-a92d-df31ec1fd195.png?width=210&height=372)
Press Lock screen & security.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-eea54156-2b7a-43b6-ab6a-4744c4eec637.png?width=210&height=372)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-06568c32-520e-4420-b41c-02c0d0144687.png?width=210&height=372)
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-8eb78856-9159-46ac-ad63-76ce5518aa50.png?width=210&height=372)
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-750aba98-7ceb-43f9-9208-b114f2fb149d.png?width=210&height=372)
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-7b4fd4a3-6799-4e0d-ae9f-dfeeafa9fb22.png?width=210&height=372)