1. Find "Set up SIM card lock"
Slide two fingers downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-74c57bac-f4cb-4221-a7c7-9d243f228d7e.png?width=204&height=366)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-5316b8e0-12cb-413b-9087-8f044cf22306.png?width=204&height=366)
Press Lock screen & security.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-48cc5fe2-99d1-43fd-b058-c39c16e3f7fd.png?width=204&height=366)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-d9f51e9f-677d-4a8c-93b1-688d937c181c.png?width=204&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-3ee192ed-9251-45fc-9537-317b530b5041.png?width=204&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-252b0eee-3dc1-41d8-8ab6-c44b41c65d2f.png?width=204&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-98cadb6f-15a0-4f79-8e5a-1fbde00e79ea.png?width=204&height=366)