Could you put it in airplane mode?
One reason is that I get crappy cell service at my house, yet my phone constantly connects to a cell carrier when I make a call, so I'm not even sure if WiFi calling is working. Right now I'm connected to T-Mobile and FiSpy tells me the signal strength is 2147483647dBm and I have no bars, yet my WiFi is showing a signal strength of -70 dBm, so it should choose WiFi, but it doesn't.Can I ask why? You get unlimited minutes with fi, it really shouldn't matter.
No, that doesn't work.