1. Find "SIM PIN"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-eb65d787-390f-4b05-ac2f-cf0f516ac3cd.png?width=208&height=454)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-1c15d5d4-35e0-4480-bc44-18db75a0c933.png?width=208&height=454)
Press SIM PIN.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-64598f94-f8a8-4934-a32a-19a061c3c740.png?width=208&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/7140723-f-d23d24d6-6317-4778-af61-b57a7f006ae8.png?width=208&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. 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-3dca3bd9-a618-4725-ad42-300c74920ecf.png?width=208&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/7140723-f-d23d24d6-6317-4778-af61-b57a7f006ae8.png?width=208&height=454)