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-33f987e6-fbb6-4fbc-824e-5e3a60c7e651.png?width=194&height=440)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-8323c9e6-df24-45b8-8cc3-ac07d5b082cb.png?width=194&height=440)
Press Security.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-27f03e40-ab1b-4c1c-afac-589865f9deea.png?width=194&height=440)
Press Advanced.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-9afd0705-05a2-4c50-8dc0-c6dc89166faf.png?width=194&height=440)
Press SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-2ecb254e-1942-4e22-a279-7cda44b5fd15.png?width=194&height=440)
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-7034d77b-660b-4856-b629-e0fe0990c6df.png?width=194&height=440)
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-cd96c9d7-6bda-4cab-a0b9-0c16b0a3efaf.png?width=194&height=440)
3. Return to the home screen
Slide your finger upwards starting from the bottom of the screen to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-7034d77b-660b-4856-b629-e0fe0990c6df.png?width=194&height=440)