1. Find "Set up SIM card lock"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-29ffbbbf-5776-4fd6-a30d-2cbc509f7448.png?width=212&height=424)
Press Security & privacy.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-64b4974e-1b87-47d9-b975-75403ffeaafc.png?width=212&height=424)
Press More.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-ec3986af-b6ad-44df-bef8-0e91920024c5.png?width=212&height=424)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-29d63d1c-4fb0-4550-8a1b-4e082d71ab79.png?width=212&height=424)
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-9d89eb2d-372e-494e-a953-53f1a8aea1b8.png?width=212&height=424)
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-43284ded-43de-4bed-8091-8eaee425f89f.png?width=212&height=424)
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-9d89eb2d-372e-494e-a953-53f1a8aea1b8.png?width=212&height=424)