1. Find "SIM PIN"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-7205093e-fe13-4b8b-bcd9-33361050edf0.png?width=204&height=366)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-7a533326-92cb-4790-8908-80b7547aef58.png?width=204&height=366)
Press SIM PIN.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-ef9104cd-a2e3-4973-a18f-88d04f97de88.png?width=204&height=366)
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-dd206b93-eabb-4391-bbaf-75d7a08ff77f.png?width=204&height=366)
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-e57a92e7-18d5-4c56-bcd9-3bfd3a5676b1.png?width=204&height=366)
3. Return to the home screen
Press the Home key to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-dd206b93-eabb-4391-bbaf-75d7a08ff77f.png?width=204&height=366)