I’m receiving voicemail several hours after missed calls

Contact Verizon, voice mail is under their purview and there may be a problem with either the provisioning for your iPhone or your account on their server. I don't know of any cell providers that are pro anything except making money. And if I was with a provider that had that happening for years I would have changed providers by now. This is certainly not normal with Verizon.

What she is referring to is did you have cell DATA service all day. The call would come in on cell voice but to get the voice mail requires that you have a cell data connection. Listen to Idris, she is a genius on these matters, especially when it concerns Verizon.

Did they send you a network extender or a Microcell? If you have poor coverage at your house it is probably a microcell. They can fail and will cause problems with cell data and sometimes voice. I've only experienced this with an AT&T model a friend had, no experience with Verizon. Did your voicemail previously work as expected with this device?

I missed several calls today and checked for voicemail after each one. There was no notification for voicemail, just the missed calls. 6 hours later I received 5 voicemails, all corresponding with the previous missed calls.

iphone 8 running 12.1.4 on VZW

Did you have an active cellular data connection during all that time? If, for some reason, you didn't, that would explain what happened.

I was in the same location, connected to WiFi and I have a network extender from Verizon so I’m assuming, and I really mean assuming, that I had service all day. I may not have though.

Being connected to WiFi isn't relevant in this case. You need to be connected to cellular data.

Probably incorrect but besides the point. If it has worked prior to this then either there was a system problem with Verizon, or your device is failing. If you can go to another location and quickly get voice mail messages but then return home and have the delay then your device may need replacing.

https://discussions.apple.com/thread/250182892?answerId=250338441022#250338441022

deggie said: “I don't know of any cell providers that are pro anything except making money.”

What I’m getting at, is that Verizon used the word “PRO” and I think they are referring to the prefix “pro”; not the abbreviation of “professional”. But I’m uncertain.

Regardless to vocabulary, Verizon told me to ask Apple about this same issue, being that it is a faulty iPhone. It is, after all, more than half-a-decade old iPhone.

But, dialing star-eight-six, is my only way around this. Getting up, there’s two a red-encircled “2” above, about five days ago.

Could it be a faulty Apple iPhone?

I know many people with Verizon phones of all kinds and none of them have hours late voice mails.

I had one and it was very recently. So perhaps there was a transient issue.

I've never really used a network extender. Based on my limited understanding, I would think it should be. I'd consult further with Verizon. Also, what you have now and what you had at the time you were having the problem may not be the same thing.

I'm aware of what "pro" means and did not think you meant professional. What was the name of this senior executive at Verizon that told you this. If it was a first line tech support person then it is just another item of fake news that you propagated, and you weren't even sure about it.

I know many people with Verizon phones of all kinds and none of them have hours late voice mails. If everyone on Verizon with an iPhone had this issue it would have made the news long ago. So when you made a Genius Bar appointment with Apple what did they say when they tested your iPhone? And which model do you actually have?

My iPhone's been doing this for years --- literally.

My Cell Provider told me that they are not "PRO" Apple. Bretty much, they favor Android devices.