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-003c5708-e8e3-4c08-aaf7-87391778793a.png?width=194&height=388)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-7ae0f14f-f07a-46be-83e1-87f8ea487c2e.png?width=194&height=388)
Press Security & location.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-2280b9e5-4db5-4ab1-bd13-3c843f81c7e7.png?width=194&height=388)
Press Advanced.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-566f1123-32ca-44c5-9bf8-c4b4704fdfac.png?width=194&height=388)
Press SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-be91892b-2724-48e3-9fef-391c0c1258e4.png?width=194&height=388)
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-f0a29421-b8f9-4f3f-9e3c-27627445b3f9.png?width=194&height=388)
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-13963392-b13e-445b-8ed4-796d3d270c63.png?width=194&height=388)
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-f0a29421-b8f9-4f3f-9e3c-27627445b3f9.png?width=194&height=388)