Since the last update 2 weeks ago, WiFi calling has ceased to work on all my phones, Samsung S-7, Droid Turbo, Kyocera.
We have low to no signal at our house and up until the update 2 weeks ago we could put the phones in Airplane mode, turn the WiFi back on, and make WiFi calls. Now if you try to make a call without airplane mode on, it says Networks not Available and won't call. If you put it in airplane mode, and turn WiFi back on, it pops up a message that you are in airplane mode and can't make a call and gives you the option of cancelling the call or turning airplane mode off.
They are all:
1. HD calling enabled
2. WiFi calling enabled
3. Roaming is set to "Prefer WiFi"
They all worked fine until the last update.