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. NOTICE: SCREEN IMAGES MAY DIFFER FROM YOUR ACTUAL DEVICE.
If you cannot find More / General, continue to the next step.
If you cannot find SYSTEM, continue to the next step.
Old SIM PIN
New SIM PIN
Your SIM PIN has been changed.
Confirm new SIM PIN
If you cannot find Device / My device, continue to the next step.
Backup PIN
Confirm backup PIN