"No service" at home and "wifi calling" stops working too
I have very weak ATT (1 bar) signal at home. So, I did turn on the "wifi calling" feature in my phone (iPhone 7). However, there are times when even the "1 bar" signal disappears and phone shows t "no service" message. In that situation, the phone calls just drop and I am unable to make any call, even though "wifi calling" is on, until "1 bar" comes back. So, it appears to me that even for "wifi calling" feature to work, the cellphone needs some minimum connectivity to phone towers.
So, is there any solution in such scenarios other than changing provider? I spoke to ATT customer service once and they told me that they have stopped giving out microcell.