1. Find "SIM card lock"
Slide two fingers downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-1507a358-89e7-4c93-b13b-a34e08162406.png?width=204&height=408)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-6384514d-aa8b-477d-89c5-29b25b6fe56e.png?width=204&height=408)
Press Security & location.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-26928389-ed30-4ec9-a5c7-2509f84ce37e.png?width=204&height=408)
Press Advanced.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-15a375fc-d908-4872-8813-3b25ed696073.png?width=204&height=408)
Press SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-9b898a8a-3162-425e-8d2a-dc803aea490a.png?width=204&height=408)
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-c719a339-bb89-4809-b176-df518fa64731.png?width=204&height=408)
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-ab05b22e-fd57-4089-98c1-4957311c48ef.png?width=204&height=408)
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-c719a339-bb89-4809-b176-df518fa64731.png?width=204&height=408)