1. Find "SIM card security"
Slide two fingers downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7090125-f-50a35c23-12ce-4d5f-9648-973e5818495c.png?width=280&height=446)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7090125-f-68c2c56e-1e80-4099-81b6-d78490e0bd4a.png?width=280&height=446)
Press Security and privacy.
![](http://wmstatic.global.ssl.fastly.net/ml/7090125-f-ec25d354-1856-4b04-b773-1dcb3075e0c8.png?width=280&height=446)
Press More security settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7090125-f-6b566283-4001-43c7-a610-583e1ece137d.png?width=280&height=446)
Press SIM card security.
![](http://wmstatic.global.ssl.fastly.net/ml/7090125-f-d6197cb2-9cb9-492a-ac6f-f58bb1a47b38.png?width=280&height=446)
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/7090125-f-ebbbfb62-5de4-470a-be9c-586038fdc0dc.png?width=280&height=446)
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/7090125-f-9ff7600d-1558-42eb-b60d-b844d41f582f.png?width=280&height=446)
3. Return to the home screen
Press the Home key to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7090125-f-ebbbfb62-5de4-470a-be9c-586038fdc0dc.png?width=280&height=446)
How would you rate your experience?
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![](/Content/images/design_assets/vf-fb-logo.png)