1. Find "SIM card lock"
Slide two fingers downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-dcb3cc6d-4af6-4520-afef-1cf345ae8870.png?width=204&height=452)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-ce341a3d-e91b-433c-aeb7-6e304666366d.png?width=204&height=452)
Press Security.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-71512d96-1e1f-4d8c-b3fc-f0e4de437264.png?width=204&height=452)
Press SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-0ee20ebe-7fec-41c9-83b6-c31e8a18f702.png?width=204&height=452)
2. Turn use of PIN on or off
Press the required SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-d18d22ab-c0e1-455c-9cac-2042f46cfefb.png?width=204&height=452)
Press the indicator next to "Lock SIM Card" to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-ad98871c-24f6-4f56-b003-277ef07c7c49.png?width=204&height=452)
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-1370f53d-3981-46c9-a9e7-43ad94ef587d.png?width=204&height=452)
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-ad98871c-24f6-4f56-b003-277ef07c7c49.png?width=204&height=452)