1. Find "SIM PIN"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-d65223db-9d62-417c-909c-167d4b8c0d7e.png?width=304&height=436)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-bc30c09e-cb62-4d41-9050-76e5161d1ecf.png?width=304&height=436)
Press SIM PIN.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-a722dae9-f53d-4c22-aae8-1ccfc96aa08e.png?width=304&height=436)
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-78a1c002-6376-4cd6-a1b6-e9b8507b282d.png?width=304&height=436)
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-59337140-aa93-4c21-9406-bdf472039dc6.png?width=304&height=436)
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-78a1c002-6376-4cd6-a1b6-e9b8507b282d.png?width=304&height=436)