1. Find "Set up SIM card lock"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-52d46a9b-4ad6-4d81-85fa-c255ea4f6f3f.png?width=208&height=450)
Press Security & privacy.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-939f6174-79fa-48fe-ab63-a04e224c75e1.png?width=208&height=450)
Press More settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-d58130c5-13b7-4ca7-ab13-3b39c3ba0a4c.png?width=208&height=450)
Press Encryption and credentials.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-9df3ce4b-0c65-4e07-a4a4-2329748c9493.png?width=208&height=450)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-6d080291-65f0-4376-80d7-59e6ec42fab3.png?width=208&height=450)
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-3d0ae786-6c5a-4764-8b87-3d94e850d4c0.png?width=208&height=450)
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-1c363e49-d310-4b22-a28e-f883bcfb86b1.png?width=208&height=450)
3. Return to the home screen
Slide your finger upwards starting from the bottom of the screen to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-3d0ae786-6c5a-4764-8b87-3d94e850d4c0.png?width=208&height=450)