You can change your voicemail PIN at any time. It must be four digits and can't be the last four digits of your home phone number.

Steps

1. Dial *62
2. Enter your current four-digit PIN then press #
3. Press 8 to change the PIN
4. Enter a new PIN followed by #
5. You will be required to confirm your new PIN. When prompted re-enter the new PIN and press #.