1. Find "Set ‹SIM› lock"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-f77a8e56-b2f6-4fb7-bd8a-668274854c25.png?width=204&height=446)
Press Security & privacy.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-8148674e-274a-4514-9b4b-e55465bdbae0.png?width=204&height=446)
Press More settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-3abaab59-055c-4d30-a903-6a5745d3e173.png?width=204&height=446)
Press Encryption and credentials.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-71f291e8-98d8-4b48-8e40-741690288603.png?width=204&height=446)
Press Set ‹SIM› lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-7b102111-cd73-497f-9e16-2ca5ed6e8153.png?width=204&height=446)
2. Turn use of PIN on or off
Press the required SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-6ab30af0-28f8-420d-b040-3699b4ccc605.png?width=204&height=446)
Press the indicator next to "Lock SIM card" to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-6ab30af0-28f8-420d-b040-3699b4ccc605.png?width=204&height=446)
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-20763fef-fad1-404c-91dc-f78645631b8b.png?width=204&height=446)
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-6ab30af0-28f8-420d-b040-3699b4ccc605.png?width=204&height=446)