I use Wi-Fi calling when I am at home. I have a good Wi-Fi signal all over the house & when I enable it on my iPhone 7 the indication appears beside the carrier info. "TFW Wi-Fi". Randomly when I pick up the phone the Wi-Fi doesn't appear. I have given it a chance to connect in case it has disconnected, but the Wi-Fi indication doesn't appear. Later, in the same location, I will check & the Wi-Fi indication is there. I thought maybe Low Power Mode was the culprit, but it doesn't seem to matter. iOS is 13.2.3. It's a new phone & new carrier so I don't have history to compare. Any insight into this is appreciated.