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-847c9ea5-5cf5-4329-9bbb-841f14147d14.png?width=212&height=376)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-ee593bf2-d9af-4e9a-af6c-33313b350e47.png?width=212&height=376)
Press Lock screen and security.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-69e97cef-a139-42b1-a83c-08ce3f50c810.png?width=212&height=376)
Press Other security settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-098c2df7-f66b-4b8f-80f3-c5d8208ea065.png?width=212&height=376)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-d73fa720-fd74-410e-b3c0-b95bff69ccb7.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-779b3c84-a46f-49b6-bfd0-3d0a7b796c56.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-93a3d3f1-9053-46d0-b743-19f9dabeab87.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-779b3c84-a46f-49b6-bfd0-3d0a7b796c56.png?width=212&height=376)