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/7140723-f-efdede0e-2223-443e-85b3-188f527bccb8.png?width=210&height=350)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-40ca7a42-a406-4474-9760-da267b874bc8.png?width=210&height=350)
Press Lock screen and security.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-d74b272a-8d05-4d5a-9b22-f69fe4d2a183.png?width=210&height=350)
Press Other security settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-40786c69-e1c9-4c80-9cf0-305157cce54c.png?width=210&height=350)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-1d3a0d66-0151-4adc-a1cf-9440a54ed0bd.png?width=210&height=350)
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-0108099a-8875-42fc-a48e-d793c260f8f3.png?width=210&height=350)
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-567aba2e-7821-4296-938f-0d6ddf2dad84.png?width=210&height=350)
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-0108099a-8875-42fc-a48e-d793c260f8f3.png?width=210&height=350)