1. Find "SIM PIN"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-1d2f420d-d3ad-4187-a1d0-cd35df771d84.png?width=204&height=366)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-1e99d603-09d6-470e-8cb3-54b3345e1619.png?width=204&height=366)
Press SIM PIN.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-d9b2eeb6-a46c-4258-9c73-f014dbda7381.png?width=204&height=366)
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-c41f5d24-4a3e-4e73-b215-34440ce0eb57.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. 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-1eb45830-c69b-4a26-b1b6-5ef7ef5b220d.png?width=204&height=366)
3. Return to the home screen
Press the Home key to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-c41f5d24-4a3e-4e73-b215-34440ce0eb57.png?width=204&height=366)