1. Find "Set up SIM card lock"
Slide two fingers downwards starting from the top the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-19214162-0078-4d0a-912f-a3d3d0ed22a7.png?width=218&height=386)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-dba07846-f574-4e52-bbb6-b763627679a5.png?width=218&height=386)
Press Advanced settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-daafac7a-df98-4993-b838-6e36500b5321.png?width=218&height=386)
Press Security.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-3bb88488-d785-4af3-98ce-6b315e60d09b.png?width=218&height=386)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-7a2b64c0-5898-4881-84fd-bad54dba3b57.png?width=218&height=386)
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-58cd1c78-b971-4352-a344-3a1b73a993bc.png?width=218&height=386)
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-05841cd0-5e9b-479a-bf09-cca39d66bb9f.png?width=218&height=386)
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-58cd1c78-b971-4352-a344-3a1b73a993bc.png?width=218&height=386)