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-b73c638f-669b-407a-bd20-e620638335f5.png?width=206&height=368)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-a3568426-29ff-40ec-bc56-dc7942499092.png?width=206&height=368)
Press Security.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-443ed4c5-b72c-4a38-b86d-eba9f8c243f2.png?width=206&height=368)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-50db1d90-428e-4c44-ab61-25f7b3667c7a.png?width=206&height=368)
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-91fdbdad-2fd8-44c5-9aef-1128a56d2174.png?width=206&height=368)
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-28730635-b183-4bdc-a046-1a512a2918a0.png?width=206&height=368)
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-91fdbdad-2fd8-44c5-9aef-1128a56d2174.png?width=206&height=368)