1. Find "Set up SIM card lock"
Slide your finger downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-b4cfed90-c5fb-4fd7-99a8-51420eafc2ba.png?width=210&height=372)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-7b11306a-df98-4691-820f-468fcf486a92.png?width=210&height=372)
Press Lock screen and security.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-92042c2b-1e27-4596-9019-046bb47e38d3.png?width=210&height=372)
Press Other security settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-7d277a86-7395-4510-b29e-6b26ebe7877a.png?width=210&height=372)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-b20a7f82-560e-41ce-9ab4-28a0da48dbba.png?width=210&height=372)
2. Turn use of PIN on or off
Press the indicator next to "Lock SIM card" to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-57ac623e-94e2-4510-bea1-7a3dd58e9366.png?width=210&height=372)
Key in your PIN and press OK.
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-c3ce58e8-c63c-4b75-93ae-35915d0bbe1d.png?width=210&height=372)
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-57ac623e-94e2-4510-bea1-7a3dd58e9366.png?width=210&height=372)