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-0be69685-54fb-49e1-a5ad-a17af613e1be.png?width=216&height=386)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-dfa46dcc-d65b-4921-a381-050a7fe81d44.png?width=216&height=386)
Press Lock screen and security.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-bbe5f93d-ae5e-4fe7-a089-6019a68d9edc.png?width=216&height=386)
Press Other security settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-d26e0acb-0cdf-4031-a99e-56a8f733bea4.png?width=216&height=386)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-80676c5f-2c40-4b0e-b298-e4842b88652f.png?width=216&height=386)
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-0c4a70f1-a96f-4a9f-8046-682a820836fd.png?width=216&height=386)
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-bda9d1e5-cf31-4180-882d-7e69575c9c7f.png?width=216&height=386)
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-0c4a70f1-a96f-4a9f-8046-682a820836fd.png?width=216&height=386)