1. Find "Privacy"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-09b897bf-4484-4c8b-a1ba-264eead1a7e0.png?width=200&height=448)
Press Passwords & security.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-fa28e499-b4bd-4cfb-8e73-677b329b6350.png?width=200&height=448)
Press Privacy.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-8eb79141-fe76-41be-82c7-c3e9e5a4d32d.png?width=200&height=448)
2. Turn use of PIN on or off
Press the required SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-f81028f9-8570-4a9c-b91e-f2951f2afff3.png?width=200&height=448)
Press the indicator next to "Lock SIM card" to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-10d31fa2-4be2-47f3-ba66-ed097185dac5.png?width=200&height=448)
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-81fd5b5f-4a76-4ff3-b1ea-fc323be922ba.png?width=200&height=448)
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-10d31fa2-4be2-47f3-ba66-ed097185dac5.png?width=200&height=448)