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-aa49f7aa-0eed-44e8-ac4b-8e400a9b21e8.png?width=206&height=368)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-93050226-ea5c-4aa1-bbd5-9cb190344575.png?width=206&height=368)
Press Lock screen & security.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-30fa3d35-cd35-4528-95ad-6dd0acb96a7d.png?width=206&height=368)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-4f63cc4a-74ad-4108-b70f-4325ccb667d1.png?width=206&height=368)
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-ed42d377-19dc-48c2-a5f4-758be6951f15.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-177f41ac-e8a8-4ed2-8c1a-de2307202349.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-d7b1e7fb-9ba3-4f0b-a0d8-88d2f3a9f537.png?width=206&height=368)