Hello, I have never had voicemail working on my phone. Whenever I try calling *86 it asks me for my mailbox number and when I enter my phone number it says it's not valid. Calling *611 is no use, no one would talk to me there, they just keep me on hold endlessly.
We would be happy to assist you with your Voicemail. When accessing your Voicemail it will ask you for a PIN. If you don't recall your PIN, you can reset it on your My Verizon account. Please see this link for the steps: https://www.verizon.com/support/knowledge-base-143805/ . Let us know if this helps!
reductor, we are here to help and certainly want to get your voicemail box working. Did you follow the steps listed in the link provided? If so is that where you are still getting the 'Invalid mailbox number' error message?