1. Find "SIM PIN"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7131224-f-9c6ade35-2a62-411b-a5f5-7fa56f0e5780.png?width=206&height=448)
Press Mobile Service.
![](http://wmstatic.global.ssl.fastly.net/ml/7131224-f-dc2529f5-172f-451a-bf41-307494f5d3ed.png?width=206&height=448)
Press SIM PIN.
![](http://wmstatic.global.ssl.fastly.net/ml/7131224-f-5c16568f-4ecf-4c8f-969b-47630bc799a3.png?width=206&height=448)
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/7131224-f-4b8ac629-cf2d-4dac-9c8b-7c8890a5c1cf.png?width=206&height=448)
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/7131224-f-a0856703-f99d-4606-a37b-c1f032002b0a.png?width=206&height=448)
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/7131224-f-4b8ac629-cf2d-4dac-9c8b-7c8890a5c1cf.png?width=206&height=448)