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-9dcfd406-83cd-4634-8bfe-363ac3a80acb.png?width=204&height=362)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-92144ebe-2e0d-49e9-97b7-2ed154711151.png?width=204&height=362)
Press Security.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-8ef54792-981f-4d44-a4d2-691391760997.png?width=204&height=362)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-08d45871-9d06-4cb4-abc7-c5830bd22d63.png?width=204&height=362)
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-028f082a-2a43-41fe-bc79-cb2b0b8f7e45.png?width=204&height=362)
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-8b04ecb8-a1b3-4f50-b8e2-e3dcee7e6a1e.png?width=204&height=362)
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-028f082a-2a43-41fe-bc79-cb2b0b8f7e45.png?width=204&height=362)