1. Find "SIM PIN"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-ea59f24e-caec-482d-a241-75deb27b9d6e.png?width=204&height=366)
Press Mobile Service.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-b7506ee7-aaea-42d5-ac2c-9f2cbc83b74d.png?width=204&height=366)
Press SIM PIN.
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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-b76d9c4f-04cc-40e6-ad31-fbb8c28d1096.png?width=204&height=366)
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-b172d01d-d827-41f0-8d27-fe7a2e611e39.png?width=204&height=366)
3. Return to the home screen
Press the Home key to return to the home screen.
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