1. Find "SIM card lock"
Slide your finger downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-59283ed6-de8d-4590-9da2-1d670e5a977d.png?width=204&height=408)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-57db14f7-4305-4ba4-872b-db7e22bd95c6.png?width=204&height=408)
Press Security & location.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-b0a79549-8b10-4c3a-9320-2f60f6dce5ef.png?width=204&height=408)
Press SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-92e15c6d-f4aa-4c3e-a87c-2dbd994c50a7.png?width=204&height=408)
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-26f9226a-7eda-410d-8f9a-dfca6a8d46eb.png?width=204&height=408)
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-f70d02d9-07b8-4244-a6ec-b942c2a13044.png?width=204&height=408)
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-26f9226a-7eda-410d-8f9a-dfca6a8d46eb.png?width=204&height=408)