1. Find "SIM PIN"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7290923-f-d816297e-2fb8-4301-898b-43f581324aa6.png?width=212&height=458)
Press Mobile Service.
![](http://wmstatic.global.ssl.fastly.net/ml/7290923-f-e665e259-4b8f-4b07-aecc-def4f0544030.png?width=212&height=458)
Press SIM PIN.
![](http://wmstatic.global.ssl.fastly.net/ml/7290923-f-3baf46f7-d35a-4b1c-a600-ac1cb51beeae.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/7290923-f-afde3585-ca35-4e5e-bea6-12872dfd7dcb.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/7290923-f-adcd236c-b57b-43a6-a77b-023b870c330d.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/7290923-f-afde3585-ca35-4e5e-bea6-12872dfd7dcb.png?width=212&height=458)