1. Find "SIM PIN"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7101024-f-36cf0ddb-f9ff-4c60-9efb-21812a259822.png?width=214&height=462)
Press Mobile Service.
![](http://wmstatic.global.ssl.fastly.net/ml/7101024-f-e97dafa6-7573-4fd9-a95d-c15a95df360a.png?width=214&height=462)
Press SIM PIN.
![](http://wmstatic.global.ssl.fastly.net/ml/7101024-f-91dee758-2638-404c-9df8-06a4d05d1277.png?width=214&height=462)
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/7101024-f-269a2869-5c08-4ff6-bf0d-501c9f856b49.png?width=214&height=462)
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/7101024-f-b1924656-d627-4292-ad47-0ff6428867ca.png?width=214&height=462)
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/7101024-f-269a2869-5c08-4ff6-bf0d-501c9f856b49.png?width=214&height=462)