I will mention that I did not test this out on the phone before installing /e/. I got it off of ebay, after seeing its IMEI is supported for WiFi calling with mint mobile, and immediately installed /e/ when I received it.
I found a spot in the house that has no cell coverage, so that I could test this feature. I’ve also ensured I have the feature enabled with my carrier. The same location in the house has great WiFi reception.
I’ve attempted to make a call, but it errors with: “Mobile network is not available. Connect to a wireless network to make a call.”
I am definitely connected to WiFi. I verified I could still browse the internet.
Does anyone have more information on getting this to work?