I have an iPhone 11 Pro Max purchased through Virgin Mobile about 2 months ago. WIFi calling is enabled in the phone setting, but the network provider only every shows Virgin, it never switches to WIFiCal.
My home WIFi set set to allow all such calls to route through, all other Virgin Mobile connected devices in the home work with WIFi Calling, the iPhone has been restarted, SIM taken out and re-inserted, network settings reset and router rebooted. All these efforts make no difference to the WIFi calling status on the phone.
The last resort has been to put in the SIM card into my other device which already has a Virgin SIM in and WIFi calling enabled and working. The network came straight up with Virgin and did not change to WIFiCal at any point.
This leads me to believe something is not activated at Virgin's end, I would have liked to message chat with someone to get this matter resolved, but no chat options seem to be available, and the call centres are now closed.
The SIM card was new with a brand new iPhone 11 Pro Max (purple sim). After a total of 15 hours in chat sessions and 45 minutes on the phone, a new SIM card has been sent out, hopefully this resolves the issue.
Looks like I have the same problem - number ported over from Three successfully today but can't get WiFi calling working on my iPhone 11 Pro. Worked fine on Three and have the WiFi calling toggle on in Settings > Phone but it won't actually engage WiFi calling at all. Likewise tried toggling it off and on, rebooting phone etc. Tried 789 option 5 but couldn't get through earlier so I've tried the text message service instead but awaiting a reply. Hoping it just needs the same fix as ps2mint.
Got through to someone on the text messaging service who managed to get it up and running for me. For some reason it wouldn't initiate from my end on the phone so they had to activate it from the Virgin Mobile end but it is working fine now thanks. I can't see anywhere on the online account to say whether wifi calling is enabled though - I thought it was available for all customers automatically?