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-241ee500-ddc5-4a6d-ac5f-5b79579c55fc.png?width=206&height=368)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-dbb7a6d6-840d-4cb3-9460-a04b004072c5.png?width=206&height=368)
Press Lock screen and security.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-700e07f2-b79e-4daf-a345-b92d6810e5b1.png?width=206&height=368)
Press Other security settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-7aad2ff4-e1c0-4faa-87c9-f93a8e368d22.png?width=206&height=368)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-377dfc67-1851-4157-bcff-79e4d0d1290f.png?width=206&height=368)
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-50539019-ebfc-48e3-b078-c9e97a80db85.png?width=206&height=368)
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-bc8b303a-4ea7-4aa9-9629-0d8fe6fc4832.png?width=206&height=368)
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-50539019-ebfc-48e3-b078-c9e97a80db85.png?width=206&height=368)