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-b2bed290-4295-45c8-be13-795f1693744b.png?width=216&height=384)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-19cf31f3-aaf6-4f75-9070-5e034f33d088.png?width=216&height=384)
Press Security.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-b9ea55a9-b23c-47a7-bc69-cf4b7b9a61af.png?width=216&height=384)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-0527f91a-79be-4db5-acb5-bbe4cae2eb30.png?width=216&height=384)
2. Turn use of PIN on or off
Press Lock SIM card to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-30a01979-f4ff-4add-b86a-f52d1b606067.png?width=216&height=384)
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-77da2727-07d9-4f00-bc04-79441d862110.png?width=216&height=384)
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-30a01979-f4ff-4add-b86a-f52d1b606067.png?width=216&height=384)