A message might ask for your voicemail password when you set up voicemail on a new iPhone or after you restore from a backup.
Apple doesn't have access to your voicemail password and can't reset it for you. Only your wireless carrier manages the voicemail account for your phone number.
Get help from your wireless carrier
With your wireless carrier’s help, you can reset your voicemail password online or on the phone:
- Find your wireless carrier's customer service page.
- On the service page, look for steps about how to reset your password online or over the phone.