1. Find "Set up SIM card lock"
Slide your finger downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-e0586a8c-55e3-406f-89d6-133c37164014.png?width=202&height=362)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-34dfd033-4867-4e2c-b85c-6c3fd978547f.png?width=202&height=362)
Press Lock screen and security.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-7de72b7d-cdf5-4436-8955-377f4cdcbc40.png?width=202&height=362)
Press Other security settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-f29ab118-ae14-400f-9e22-9ddea214b73f.png?width=202&height=362)
Press Set up SIM card lock.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-ac1c25e8-6f1e-4388-a1c2-07870750f9ae.png?width=202&height=362)
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-12ac74eb-72f4-41ca-bf34-9b99421410eb.png?width=202&height=362)
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-52104f3c-d455-4335-b69e-4f6a0438bbc6.png?width=202&height=362)
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-12ac74eb-72f4-41ca-bf34-9b99421410eb.png?width=202&height=362)