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-76e3603b-ef71-4b6f-b57c-504873832387.png?width=216&height=384)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-7cd214b9-4362-4ae2-87b0-cc95696eedb5.png?width=216&height=384)
Press Lock screen & security.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-eda885e1-90b1-4417-8f74-984f6cdf62ca.png?width=216&height=384)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-7071623d-4adc-49fa-8f94-6eaac3d8eb38.png?width=216&height=384)
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-dd39b664-413e-40b5-8793-bf7297ad182c.png?width=216&height=384)
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-e17c9b1c-d66a-4e1f-8be3-f748f9fa5f35.png?width=216&height=384)
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-c934a07f-a867-4282-af5c-8529050e0f1c.png?width=216&height=384)