I have been trying to figure this out myself but I can't get it to work. I am trying to setup wifi calling on my LG G6. I have set it up before on my LG G4. I did all the registration yet it does not work. I am able to set it up and switch the wifi calling under the phone setting. BUT when testing it in airplane mode while connected to a wifi network, it does not work instead it prompts to turn off the airplane mode.
Solved! Go to Solution.
To set up Wi-Fi calling, you do have to be on the Fido network in order for the registration to the service to go through.
Once it's set up, then you can even use the service while travelling!
I hope this clears it up, let us know if there's anything else.