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-de2ee7ab-019a-4b33-ae6f-cffa68bae82a.png?width=212&height=376)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-d2b7bd71-9c67-47e3-8501-fc9c2211c00c.png?width=212&height=376)
Press Lock screen and security.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-10bd4037-8e4e-41b3-ad4a-e6f58f6da4f6.png?width=212&height=376)
Press Other security settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-b0319c64-a232-4b7b-8567-5ea54a497ad9.png?width=212&height=376)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-75e994fe-5610-47e0-a0f7-3424b7d28e02.png?width=212&height=376)
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-dce846bf-7462-483d-bc72-51ffe0340679.png?width=212&height=376)
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-a35c789d-ec35-4d8c-9a4d-ef5a0c53758d.png?width=212&height=376)
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-dce846bf-7462-483d-bc72-51ffe0340679.png?width=212&height=376)