WiFi calling after iOS 18 update

[DanielO_2578188]

My wife and my phones (iPhone 14 pro and iPhone 15) no longer have wifi calling since the ios18 update. Is there a solution to this? My work iPhone on EE still has the wifi calling after the update. I have tried everything from restarting to resetting network settings and nothings solves it! we will ok a rural area so are reliant on wifi calling as there is no mobile signal. 

[Goddess_Bastet]

First check to see if Wi-Fi calling is still enabled. If it is then try a network reset.

[Richard_1070064]

Wi-Fi calling has been working great on my iPhone 11 Pro until the upgrade to 18.1. Now it has become available intermittently at home in a room it has always worked in previously.  Appears it requires a stronger Wi-Fi signal than before. If I stand next to router and wait for Wi-Fi Call to be available and then move to where it wasn’t working it is ok. 

[MSF]

@Richard_1070064 Correct me if I'm wrong, but doesn't the phone choose a mobile signal and only use wifi calling if the mobile signal isn't strong enough?

If your mobile signal has somehow improved, then it would not choose wifi calling as often.

[Richard_1070064]

I guess that is probably correct, but as I have a very poor mobile signal at home, non existent unless I stand at a window at the front of the house, I usually have my phone in aircraft mode so Wi-Fi call is the only option available. When it wasn’t working I did turn this off but Wi-Fi call didn’t come on.

[WelshPaul]

iPhone 16 Pro, 14 Pro, 14 and 13 all updated to iOS 18.0 and Wi-Fi calling works on all devices here.

[MSF]

@DanielO_2578188 That's very odd because I have upgraded first to 18 and now 18.1 (beta version) on my iPhone 15pro and wifi calling is there right now as I write.

[DanielO_2578188]

Very very odd. I’m not sure what I am missing?