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-7407ce5c-5f96-464a-b691-9eb946597a4e.png?width=202&height=420)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-680b8d39-5a1e-473a-a314-b9c8e226b77d.png?width=202&height=420)
Press Security & location.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-292976df-d2b4-4d1e-8a3d-38babd5f5ecf.png?width=202&height=420)
Press SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-9fdbe9ec-af5a-417c-b8ba-855652df0a8b.png?width=202&height=420)
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-69ee4741-bd89-4af9-8de4-e9b90e3ee174.png?width=202&height=420)
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-1d098dcd-f714-45ac-a2f5-6008a6285b89.png?width=202&height=420)
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-69ee4741-bd89-4af9-8de4-e9b90e3ee174.png?width=202&height=420)