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-ca77412a-5570-4350-bb3e-26e347e2a90a.png?width=214&height=450)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-43bb1c83-8302-467f-abb9-7573ee741e0e.png?width=214&height=450)
Press Biometrics and security.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-8d08079a-130c-4a8b-b3f0-8e0e562e02a4.png?width=214&height=450)
Press Other security settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-6ac684ac-505b-488b-90f8-4f0294ae05e1.png?width=214&height=450)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-2699e984-4f26-40ff-9867-be1dc578ba78.png?width=214&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-c8d4e271-3650-47e8-a932-1602d0864396.png?width=214&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-fc057bd6-45f8-426e-b9d7-4ece9852a6df.png?width=214&height=450)
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-c8d4e271-3650-47e8-a932-1602d0864396.png?width=214&height=450)