Unable to connect iPhone 7 to microcell

Mine still works.  

I do have an ATT Samsung using Wifi calling and it works great.  Unlike the m-cell, I can use it wherever there is Wifi.   

Ok So I have turned WIFI Calling on. But I still drop calls and get broken reception. Also, when I clicked on link in your email this response below said you will know you are calling over WIFI when

For iPhone: The word “AT&T Wi-Fi” will appear next to the standard Wi-Fi icon in the status bar.

But I do not see this. Any suggestions?

Thank you for taking the time to respond to my post. I have tried your sugggestion to turn on WIFI calling but still experience dropped calls and poor reception.

Thank you for taking the time to respond to my post. Even after turning in the WIFI Calling, I still experience dropped calls and poor reception in my home.

How do I know My calls are going through WIFI? For iPhone: The word “AT&T Wi-Fi” will appear next to the standard Wi-Fi icon in the status bar.

However, I do not see this “AT&TWi-Fi” on my iphone 7 status bar.

Ok Thanks AGAIN! You are awesome!

I am traveling right now but when I return home I will try these suggestions and recheck my settings.