WI-FI Calling and Ubiquity AP/Routers
I am having a really hard time here at my work place in finding info I can give our Tech Co. about the issues I seem to be having with my Iphone and Wi-Fi calling not working. Internet works just fine on the network, wi-fi calling on the other hand is not functional or has limited functionality, seems to work when I have a single signal bar, but most of the time I get a "No Service" indication, even though the phone shows to be connected to wi-fi, and everything else works, there is no wi-fi calling at that point.
I have went thru all the suggestions about resetting the phone restoring the phone, swap to Airplane Mode to try to force wi-fi calling etc. etc. and nothing has worked. Forgetting the network and signing back into the network does nothing as well.
It seems that I can find info going back as much as maybe 4 years where there have been issues on and off again with Iphone and Ubiquity products. How can I best explain this to our Tech Co. to fix this because our sales dept here cannot take calls without the Wi-Fi calling, there is no signal inside our steel buildings regardless of provider. They are double shelled Steel Buildings, nothing makes it thru.
Please assist if you can.
iPhone 13 Pro Max