1. Find "Change PIN"
Press Settings.

Press Phone.

Press SIM PIN.

Press Change PIN.

2. Change PIN
Key in your current PIN and press Done.

Key in a new four-digit PIN and press Done.

Key in the new PIN again 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 your operator.

3. Return to the home screen
Press the Home key to return to the home screen.
