1. Find "Set up SIM card lock"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-f4836bf5-2b39-403b-9fb1-23c6a6e4a69c.png?width=216&height=384)
Press Advanced settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-193ffbf3-a6c5-4aab-b4f9-b36bc693fe0c.png?width=216&height=384)
Press Security.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-92a6578f-9f7d-4291-9372-fb1e25848656.png?width=216&height=384)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-8541a211-ee6d-46aa-ba00-4cb27c78201a.png?width=216&height=384)
2. Turn use of PIN on or off
Press Lock SIM card to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-b04a5abf-20c4-4180-a4f7-d5badc3e9cb4.png?width=216&height=384)
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-547b4b35-f0cd-452f-9187-d5a0227b63d2.png?width=216&height=384)
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-b04a5abf-20c4-4180-a4f7-d5badc3e9cb4.png?width=216&height=384)