1. Find "SIM Security"
Press the Navigation key.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-3c85e59f-3eac-4eb6-993d-64046c2b2d63.png?width=126&height=170)
Select the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-80ed3b77-5f8b-42d1-92b0-542be9e96828.png?width=126&height=170)
Select Network & Connectivity.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-dd2d372d-5e28-4dd3-abd8-824b9f5ed93a.png?width=126&height=170)
Select SIM Manager.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-0209af29-f3eb-4723-9516-f1bd27b87b83.png?width=126&height=170)
Select SIM Security.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-33b70f36-7c6f-452b-9109-835eff52c1be.png?width=126&height=170)
2. Turn use of PIN on or off
Select SIM PIN.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-8159141a-1f59-4275-94d7-431b998db272.png?width=126&height=170)
Select the required setting.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-e6c247db-85b1-4fee-8d34-802d6c804210.png?width=126&height=170)
Key in your PIN and press the Right selection key.
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-caea8787-6a80-4887-b6e6-5a175bf5a87e.png?width=126&height=170)
3. Return to the home screen
Press Disconnect several times to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-8159141a-1f59-4275-94d7-431b998db272.png?width=126&height=170)