1. Find "Set up SIM card lock"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-38f7d0e5-5847-446b-87de-e38d17b8ea8e.png?width=206&height=366)
Press All.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-df9b06cd-cf56-488e-8f61-c4760a967663.png?width=206&height=366)
Press Security.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-c5dba764-e632-4cf4-a6ae-79ba6f758e9f.png?width=206&height=366)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-323a5572-f935-43d0-8f72-8ccc3dceff80.png?width=206&height=366)
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-00d4fb05-ed06-461b-a579-d2dcac53a63b.png?width=206&height=366)
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-1030ec1e-568e-44b3-9f07-08b3f22e0b59.png?width=206&height=366)
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-00d4fb05-ed06-461b-a579-d2dcac53a63b.png?width=206&height=366)