1. Find "SIM PIN"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-0deb72e5-1a49-47c5-beaf-4bc15210fbcb.png?width=208&height=368)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-6d106242-6ab2-4613-b680-326097f18fa2.png?width=208&height=368)
Press SIM PIN.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-5fe778b3-a5c3-41cb-893f-8451a72318e9.png?width=208&height=368)
2. Turn use of PIN on or off
Press the indicator next to "SIM PIN" to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-7fc71ef7-e55c-4c8b-95e5-c1942018518c.png?width=208&height=368)
Key in your PIN and press Done.
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-20d8d49a-1ad2-4485-ab56-16bb9bd9f0e1.png?width=208&height=368)
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-7fc71ef7-e55c-4c8b-95e5-c1942018518c.png?width=208&height=368)