I lived on the Mogollon Rim in a dead zone for pretty much all carriers (~10 miles N/NE of Payson). It's just not economically feasible, especially considering the terrain, to serve such a low number of customers. We had a land line and 10/2 ADSL from CenturyLink, and with certain smart phones (as loath as I am to praise Apple, it was iPhones) capable of making/receiving calls and text messages over WiFi. That's just the price of living in the boonies.
Ninja edit: it's the same for other "modern" infrastructure, whether electronic or physical. It was a one-lane dirt road, you couldn't order pizza for delivery, Uber barely even existed in the town itself, nevermind where I lived, and your little hamlet was basically on the bottom of the list of the places whose roads would get plowed after snow storms.
Very solitary and peaceful though, if you're into that kind of thing. Next to zero noise and light pollution looking up into the sky from the property. I've never seen a clearer sky before. Nature abound too (could also be a drawback sometimes; bull elk can be real assholes in the spring).
