1. Find " SIM Card"
Slide your finger down the display starting from the top edge of your mobile phone.
Press Security and Privacy.
Press SIM Card.
2. Change PIN
Press the indicator next to "SIM Card PIN Lock" to activate the function.
Key in your current PIN and press OK.
Press Change PIN 1 and key in your current PIN.
Press Enter new SIM PIN 1 and key in a new 4-digit PIN.
Press Confirm SIM PIN 1 and key in the new PIN again.
3. Return to the home screen
Slide your finger up the display starting from the bottom edge of your mobile phone to return to the home screen.