1. Find "SIM PIN"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-42341d51-cd0e-4398-b29e-39ef3b479dd1.png?width=210&height=454)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-a923930d-acbe-4c89-92af-742443eb71de.png?width=210&height=454)
Press SIM PIN.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-19985ecd-911e-47e8-ab9f-709ace810e53.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-fbe071ad-a138-4495-ac02-9927716beb75.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-920a35aa-a060-462e-8f85-8d7def40e45a.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-fbe071ad-a138-4495-ac02-9927716beb75.png?width=210&height=454)