1. Find "Set up SIM card lock"
Slide your finger downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7100822-f-3e1c2199-67b6-4b9e-bc26-d81c7284c8a5.png?width=210&height=372)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7100822-f-6574d0e2-3a64-403f-b9a7-49ffe3e17d09.png?width=210&height=372)
Press Security.
![](http://wmstatic.global.ssl.fastly.net/ml/7100822-f-9110d0b5-bfb8-4787-ba9e-513989797913.png?width=210&height=372)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7100822-f-c0801af7-1a03-40a7-8a4d-386fba351b4b.png?width=210&height=372)
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/7100822-f-273631ae-8429-411b-9448-48e10dead6e0.png?width=210&height=372)
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/7100822-f-127c7d2d-c319-47bc-a1de-6195dc3f0fdf.png?width=210&height=372)
3. Return to the home screen
Press the Home key to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7100822-f-273631ae-8429-411b-9448-48e10dead6e0.png?width=210&height=372)
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