1. Find "SIM PIN"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-f421df15-4a90-4269-a3a2-543988710b6d.png?width=206&height=448)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-1ec974f6-0436-4a96-8780-f27372025f7f.png?width=206&height=448)
Press SIM PIN.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-b2419213-de8a-44c0-88f2-90f4dfb2cc15.png?width=206&height=448)
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-80906a10-1961-4a29-9f64-1a67baa42805.png?width=206&height=448)
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-a0ecff4a-3d5f-48f5-8661-1e9261113584.png?width=206&height=448)
3. Return to the home screen
Slide your finger upwards starting from the bottom of the screen to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-80906a10-1961-4a29-9f64-1a67baa42805.png?width=206&height=448)