WiFi Calling Suddenly Not Working - iPhone X

[JasK19]

Looking for some advice if anyone can help...I'm desperate. I live in a condo with pretty much zero service. I have used WiFi calling on my Verizon account for the last 4 years or so on 3 different iPhones and many different iOS releases. With almost no issues. Last night a call dropped while wifi calling was active, and I have not been able to get it to activate since. My Iphone X was on iOS12.X, and I have updated to 13.3. I have also done the following:

All basic steps, turning wifi calling on and off, airplane mode, sim card, cellular data etc...

Reset Network Settings

Reset All Settings

Spent 2 Hours on phone with Verizon support today (they were VERY helpful) including a network specialist. They rebuilt the connection to the tower 3 times along with a ton of other stuff.

I have factory defaulted and restored to backup 3 times

Factory Defaulted and setup as new phone twice - It won't switch over to WiFi calling even on a new clean phone boot

I work in tech/AV, and have updated firmware on router and access point (Luxul Epic4 & Rukus R310) and checked throughput from both the iPhone end and from the AP UI.

Verizon is convinced it is a software issue on the iPhone, but since I cannot even factory default it and setup new and get it to work I am confused. Also, I can make WiFi calls on my computer from the same network. And I have tried all steps above on other networks.

Thanks!

[vzw_customer_support]

Being able to make calls while at home is mandatory.  We are here to help turn this around.  A private message has been sent to assist you further.

SeanC_VZW

[Chinna01]

I have same problem with iPhone 11, tried everything still can’t get WiFi calling to enable.

[vzw_customer_support]

We're sorry to hear that you're having this experience, but we'll be happy to assist you with this issue. One thing that can stop you from using your WiFi calling is if the feature was added to your line of service, you would then need to be on a strong network connection in the Verizon footprint in order for the feature to be activated on the device. Just adding the WiFi calling feature won't complete the full activation without the network connection. We can help with this issue, but it is best to ensure that you have the connection required for activation. ChristopherS_VZW

[csaafc]

Same issue w all iPhones at our residence in Scottsdale AZ 85255 , models from 6 to 12 (7 phones, 5 on personal and 2 work)

[KH-OrnEsh]

Due to the age of this thread, it will be locked in order to keep discussions current. If you have the same or a similar question/issue we invite you to start a new thread on the topic.