1. Find "SIM PIN"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-f07639b8-ad53-4816-be64-06f1f6ae41d1.png?width=210&height=454)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-8c0a5fbc-b314-4930-9292-89ee694a0e57.png?width=210&height=454)
Press SIM PIN.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-e6985b57-62bb-4857-bd8b-a32b77189db3.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-a17a57f4-5996-4223-a04b-7fd78da880d5.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-f74a8a59-d381-4f0b-930d-1991b0f94f0b.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-a17a57f4-5996-4223-a04b-7fd78da880d5.png?width=210&height=454)