1. Find "SIM PIN"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7291124-f-bd7280b8-2d83-4d2d-88e0-540f6511ab7a.png?width=212&height=458)
Press Mobile Service.
![](http://wmstatic.global.ssl.fastly.net/ml/7291124-f-e81a2d7b-aea4-4162-8691-601c4fe7d6fb.png?width=212&height=458)
Press SIM PIN.
![](http://wmstatic.global.ssl.fastly.net/ml/7291124-f-3709d444-c761-4e1e-bd4d-be527cd7d177.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/7291124-f-ebc7b33a-81a0-405d-9432-960f2a1b2d42.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/7291124-f-328b435e-135e-4da8-8531-cee65e5c0020.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/7291124-f-ebc7b33a-81a0-405d-9432-960f2a1b2d42.png?width=212&height=458)