1. Find "SIM PIN"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-3687118e-b47a-4195-a275-14726218082c.png?width=210&height=456)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-992d2397-a5be-4999-a9f0-81df950e1b3a.png?width=210&height=456)
Press SIM PIN.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-7ad5a9cc-c896-484b-96ce-d5dd0c717594.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-45ea8c4d-45b2-4faa-bdf0-9ecea1cdce88.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-8247a3ca-5625-4c0c-9679-e58d46e55422.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-45ea8c4d-45b2-4faa-bdf0-9ecea1cdce88.png?width=210&height=456)