1. Find "SIM PIN"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-c753dcf7-4298-46c1-aeb2-86e8e72462a3.png?width=210&height=458)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-1968f08d-5d54-4bf0-b58a-b4cfbea4c5bb.png?width=210&height=458)
Press SIM PIN.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-93e8b857-f119-455c-9a35-521d89d24b3c.png?width=210&height=458)
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-7c602aa2-8819-4df9-8c6a-b4be2eedddc9.png?width=210&height=458)
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-e48efbf8-ff6d-44d5-85c7-fe0ebe3498ab.png?width=210&height=458)
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-7c602aa2-8819-4df9-8c6a-b4be2eedddc9.png?width=210&height=458)