iPhone Wifi Calling on Airplane Mode

GeorgeHow wrote:

I normally use airplane mode on my iPhone when at home.Wifi Calling is enabled.  Recently all three of our iPhones are no longer able to make and receive wifi calls (popup "No Network Connection" select cancel of disable airplane mode") .

Of course, and works as expected. Nothing new ...

FMI: Use Airplane Mode on your iPhone, iPad, Apple Watch, and Apple Vision Pro says:

With Airplane Mode, you can turn off cellular and Wi-Fi on your device during a flight.

===========

Turn on Airplane Mode

• On your iPhone, iPad, or Apple Vision Pro, open Control Center and tap the Airplane Mode button. This turns off all radios except for Bluetooth. Turning on Airplane Mode can also help to save battery, lower roaming charges while traveling, and force a signal refresh.
• On your Apple Watch, press the side button to open Control Center, then tap the Airplane Mode button. In watchOS 9 and earlier, swipe up from the watch face to open Control Center.

If the airline allows it, you can still use Wi-Fi and Bluetooth in Airplane Mode. If you turn off Bluetooth while you're in Airplane Mode, your device turns off Bluetooth the next time that you turn on AirPlane Mode.

==========

Yes, it's a little bit obscure to most readers what that last two sentences whould tell us. A possible anser is in

Choose iPhone settings for travel 

==========

You can also turn Airplane Mode on or off in Settings

. When Airplane Mode is on, the Airplane Mode icon

 appears in the status bar.

Turn on Wi-Fi or Bluetooth while in Airplane Mode

If your airline allows it, you can use Wi-Fi or Bluetooth while in Airplane Mode.

1. Open Control Center, then turn on Airplane Mode.
2. Tapto turn on Wi-Fi or to turn on Bluetooth.
3. If you turn on Wi-Fi or Bluetooth while in Airplane Mode, it may still be on the next time you return to Airplane Mode. You can turn it off again in Control Center.

==========

Saying that much: Even in Airplane mode, you can explicitly turn on Wi-Fi and/or Bluetooth.  

GeorgeHow wrote:

BTW, in the mobile Nighthawk App, I can connect to the router locally or vial Anywhere Access. What is the preferred access when at home?

As long you are within your home WiFi coverage, and not on some other VLAN or VPN, locally is the preferred way.