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-3b8110a4-69c3-42e7-9d98-28f2ea911c08.png?width=204&height=362)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-3a7078a3-b4dc-40c4-87c9-12762d877b90.png?width=204&height=362)
Press Security.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-ea051629-8dbb-4857-ac04-7ea9c6332669.png?width=204&height=362)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-2c6bbeea-f1d0-47f4-9b02-dfcf64c9399d.png?width=204&height=362)
2. Turn use of PIN on or off
Press Lock SIM card to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-98cb86c6-56c9-4e85-808e-7380e16248b1.png?width=204&height=362)
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-8b88cac8-2f77-4660-be81-4a22bdeca252.png?width=204&height=362)
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-98cb86c6-56c9-4e85-808e-7380e16248b1.png?width=204&height=362)