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 10. Make sure you have your Public SIM PIN before you start the guide. NOTICE: SCREEN IMAGES MAY DIFFER FROM YOUR ACTUAL DEVICE.
Old SIM PIN
New SIM PIN
Your SIM PIN has been changed.
Confirm new PIN
Your phone is now secure with a screen lock.