1. Find "Set up SIM card lock"
Slide your finger downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-f3f1c5c2-0b7c-420e-b35f-30c56d2f5863.png?width=212&height=434)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-00ed165e-6505-48dd-af4c-070fc489ed1f.png?width=212&height=434)
Press Lock screen and security.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-4d88bad1-8172-4ff1-94fd-8a0e039481c9.png?width=212&height=434)
Press Other security settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-788d4f4e-7ffe-4d4d-80e6-cddae58e44fc.png?width=212&height=434)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-cce9ecd0-00fd-4ce5-83e8-186485a0aaa8.png?width=212&height=434)
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-0bd975c7-06df-469e-bd9c-79678cb4f820.png?width=212&height=434)
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-fe051745-e5a7-44ff-bddd-2d16312bdbfd.png?width=212&height=434)
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-0bd975c7-06df-469e-bd9c-79678cb4f820.png?width=212&height=434)