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-33f8c6b1-6329-4cf3-9d93-2b3879216894.png?width=212&height=376)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-57e4395c-52a0-4f24-9bb1-4d9df13b7866.png?width=212&height=376)
Press Lock screen and security.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-2053328d-c95c-4d7a-b648-08a9f29a9a7a.png?width=212&height=376)
Press Other security settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-231732aa-a57c-46b0-b679-5b9888b6878e.png?width=212&height=376)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-a74e87f8-abfb-44ce-bbd1-05164e5dcc5d.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-099d68f3-3b69-464e-ade3-e0ba40f732a0.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-db7d7df8-c621-4f93-a190-f4ba8ffed5a8.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-099d68f3-3b69-464e-ade3-e0ba40f732a0.png?width=212&height=376)