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-3b9d2ae0-4626-421c-adfc-7e604379498c.png?width=206&height=368)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-5d92dc2a-9a04-4cce-8989-f6b5861fa7df.png?width=206&height=368)
Press Lock screen & security.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-f635a883-f5c0-4779-8c58-bcd39062ac23.png?width=206&height=368)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-39e8dfa8-02f3-4667-bdfa-bbb411e24ea1.png?width=206&height=368)
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-fb10e53f-6915-421f-a297-4b46ad17a4ae.png?width=206&height=368)
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-45470727-bca7-4214-b833-f19f02173fef.png?width=206&height=368)
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-789d273b-a0df-4852-93ab-835b77f77a5d.png?width=206&height=368)