1. Find "SIM PIN"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-1efa7f54-d461-4287-be24-4d7d29220b15.png?width=210&height=454)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-03b15771-1724-4791-8654-d2b7ff7c137c.png?width=210&height=454)
Press SIM PIN.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-39e8fda3-a067-46bb-80fb-3ac6aef00c5a.png?width=210&height=454)
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-99431b7d-1e42-4759-814b-0cd0966c0383.png?width=210&height=454)
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-c5c25883-3136-4c2b-8305-6c6e4ccef422.png?width=210&height=454)
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-99431b7d-1e42-4759-814b-0cd0966c0383.png?width=210&height=454)