1. Find "SIM card lock"
Slide two fingers downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-a92c050c-dd0a-4b29-81f0-ae33f5cc412d.png?width=202&height=450)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-837bfca8-e594-489c-b218-dea0792a66ce.png?width=202&height=450)
Press Security.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-483babb0-d437-4b83-8c9a-8257d8458dd2.png?width=202&height=450)
Press SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-5488fd1d-3e32-4b08-aa32-b25a1f92b8d8.png?width=202&height=450)
2. Turn use of PIN on or off
Press the required SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-cda0c6eb-cc4a-4e06-8f94-0aaec7f0f832.png?width=202&height=450)
Press the indicator next to "Lock SIM Card" to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-47484813-835b-46ac-82e1-4faa1151002f.png?width=202&height=450)
Key in your PIN and press the confirm icon.
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-e4fdd56a-d220-4dc0-a306-6aed6f05cdb2.png?width=202&height=450)
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-47484813-835b-46ac-82e1-4faa1151002f.png?width=202&height=450)