1. Find "SIM PIN"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-b4fbc85f-d217-43e2-bedd-f25877a7bf0e.png?width=212&height=458)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-4e1f5ba1-43d9-4fa8-9c1b-5d07aa0cd914.png?width=212&height=458)
Press SIM PIN.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-42f8d3bc-0412-4f12-928b-7002557bf8df.png?width=212&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-24cec110-f4a8-402b-ae4d-9fe0b5ca872f.png?width=212&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-d1f65fe3-6ce1-43c3-bc77-c6cc6b956a7f.png?width=212&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-24cec110-f4a8-402b-ae4d-9fe0b5ca872f.png?width=212&height=458)