1. Find "SIM PIN"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-7b091d0b-cbdc-4399-b722-e4fefbb37dce.png?width=210&height=458)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-316841e0-0a52-4263-9eb1-d02decdb1f14.png?width=210&height=458)
Press SIM PIN.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-f2e6a659-2063-4fa1-ac5f-7e80192938bb.png?width=210&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-1f1e8bab-ee98-44de-a152-7b0ea8e04584.png?width=210&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-04f78b93-a9e6-4ba0-befb-44613da961a5.png?width=210&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-1f1e8bab-ee98-44de-a152-7b0ea8e04584.png?width=210&height=458)