1. Find "SIM lock"
Slide two fingers downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7070324-f-3eb96269-7f0a-4752-9ba7-8cc099424aac.png?width=206&height=456)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7070324-f-829249da-e02c-4414-8e77-cb32a648d718.png?width=206&height=456)
Press Security and privacy.
![](http://wmstatic.global.ssl.fastly.net/ml/7070324-f-78a5517f-b8bc-445b-9edb-64f9113ae4aa.png?width=206&height=456)
Press More security and privacy.
![](http://wmstatic.global.ssl.fastly.net/ml/7070324-f-471d9200-4ad7-4975-994f-20c15c7d820e.png?width=206&height=456)
Press SIM lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7070324-f-c95e36b4-cb3c-415a-a965-fb7dd62a933d.png?width=206&height=456)
2. Turn use of PIN on or off
Press the indicator next to "Lock SIM" to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7070324-f-18d74ebf-eab4-4eaf-bd35-5abbd09241b0.png?width=206&height=456)
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/7070324-f-734ea01d-819c-4806-9c77-faa902a97b2a.png?width=206&height=456)
3. Return to the home screen
Slide your finger upwards starting from the bottom of the screen to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7070324-f-18d74ebf-eab4-4eaf-bd35-5abbd09241b0.png?width=206&height=456)