Re: Note 9 Voicemail app does not recognize voicemail ever
I did two things and it fixed my issue. First I cleared the storage and cache of the Voicemail app and re set everything up. Then I connected my Note 9 to WiFi calling and then I called my own phone number again (previously it would just give me a busy signal). It immediately asked for a passcode and I was able to get back into my Voicemail. Then I called my phone from another phone, declined the call, was sent to voicemail, left a message, and then I got a notification on my phone for a new voicemail.