1. Find "SIM PIN"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-13890e03-aa13-4089-8722-834252293340.png?width=210&height=454)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-eab53ccc-d8e3-436c-bfa4-506e0f9e90e3.png?width=210&height=454)
Press SIM PIN.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-4b37e4c4-3b15-459a-884b-f1d4576b899c.png?width=210&height=454)
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/7151223-f-10541865-35d5-4a8f-abc3-4b862fdf6751.png?width=210&height=454)
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. You can get the PUK by calling customer services on 191 from a Vodafone mobile phone. If you're using a land line, you need to dial 03333 040 191. 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/7151223-f-586c6324-f7b6-4082-835d-f739df33d128.png?width=210&height=454)
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/7151223-f-10541865-35d5-4a8f-abc3-4b862fdf6751.png?width=210&height=454)