If you would like to change the SIM pin code, start from the next step.
If you would like to set up a lock screen on your phone, jump to step 12.
Make sure you have your Public SIM PIN before you start the guide.
2
Swipe up
3
Scroll to and select Settings
4
Scroll to and select Security and privacy
5
Scroll to and select More security and privacy
6
Scroll to and select SIM lock
7
Select Change SIM PIN
8
Enter your Old SIM PIN and select OK
9
Enter your New SIM PIN and select OK
10
Confirm your new SIM PIN and select OK
11
Your SIM PIN has been changed
12
To activate your screen lock, go to the Security and privacy menu and select Device unlock