1. Find "SIM PIN"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-5a08f69c-58dd-4a71-83e2-3f47b19b6b2a.png?width=210&height=456)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-b7a18a2d-cab0-4884-b842-b3c63f2ee1d0.png?width=210&height=456)
Press SIM PIN.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-d59fd564-f47f-4be8-af15-9310f92d0465.png?width=210&height=456)
2. Turn use of PIN on or off
Press the indicator next to "SIM PIN" to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-16ad9ae7-c750-448a-a2a5-10306c07e72f.png?width=210&height=456)
Key in your PIN and press Done.
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-74c0e216-2136-4bc6-9724-a80aa38be7e0.png?width=210&height=456)
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-16ad9ae7-c750-448a-a2a5-10306c07e72f.png?width=210&height=456)