1. Find "Set up SIM card lock"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-a15560fc-a2ad-428e-a431-813747dafedf.png?width=212&height=380)
Press Security & privacy.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-0dd4338f-7d79-4567-8fc9-033f1ea656ae.png?width=212&height=380)
Press Additional settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-57a19b71-750d-4458-a3a4-daeaa34dec38.png?width=212&height=380)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-8d9fddc8-5485-44f6-af5e-fe4fc3d38e82.png?width=212&height=380)
2. Turn use of PIN on or off
Press Lock SIM card to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-e5277efe-7448-429a-a6dd-b87aebe72432.png?width=212&height=380)
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-ed1b7b53-461d-47e5-aa9e-99c28eb9e4e5.png?width=212&height=380)
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-e5277efe-7448-429a-a6dd-b87aebe72432.png?width=212&height=380)