1. Find "SIM card lock"
Slide two fingers downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7010524-f-44b98d05-6cbb-4099-8141-dc7a63934f30.png?width=204&height=430)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7010524-f-dd4b1b7c-d4ed-4725-a37a-cf56e28eb1ff.png?width=204&height=430)
Press Security.
![](http://wmstatic.global.ssl.fastly.net/ml/7010524-f-62aef6de-3448-4ad8-8cc7-798e8ca5cc96.png?width=204&height=430)
Press SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7010524-f-3f124597-75a6-4767-ab82-9717f085a65c.png?width=204&height=430)
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/7010524-f-b6f67012-afb1-4033-9865-754c63108daf.png?width=204&height=430)
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/7010524-f-85072f04-c4dd-46bd-ab87-64d4873d03dc.png?width=204&height=430)
3. Return to the home screen
Press the Home key to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7010524-f-b6f67012-afb1-4033-9865-754c63108daf.png?width=204&height=430)
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