I have had an open thread with Verizon and Apple for over 6 years about this problem. Even with a new IPhone 14 pro the problem still exist.
Previous thread-
https://community.verizon.com/t5/Apple/Voicemail-Notifications-delayed-Have-had-this-problem-over-4/td-p/1221404
Screenshot of the same problem that neither Apple or Verizon can seem to fix.
This issue is most likely on the Verizon network, but unfortunately no one is held accountable at Verizon. This is called defussion of responsibility. When organizations get too large this is the byproduct.
