Can not access voicemail, do not know/remember having set up a password
Can not access voicemail, do not know/remember having set up a password
You can change the password by going to Settings > Phone > Change Voicemail Password; however, if you don't remember it, you might need to go to your carrier's website and look for voicemail help.
Also, you might want to try the last 4 digits of your phone number.