1. Find "Set up SIM lock"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-3fe24a4a-3ad5-4a64-9421-f22ef1d99058.png?width=218&height=448)
Press Security.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-04104334-88a5-45ea-abea-aba9259d72f9.png?width=218&height=448)
Press More settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-98a5843c-216b-403f-a032-6be927d5ff21.png?width=218&height=448)
Press Set up SIM lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-151c8f79-faac-4ed4-9fb7-1f29331cda69.png?width=218&height=448)
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-40896b16-7fc2-41ec-9340-e13d0d0ff062.png?width=218&height=448)
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-3104a4b8-a298-4bfd-8ce6-d9d02d50105a.png?width=218&height=448)
3. Return to the home screen
Slide your finger upwards starting from the bottom of the screen to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-40896b16-7fc2-41ec-9340-e13d0d0ff062.png?width=218&height=448)