I was wondering about cellular strength, too. Even in our rather civilized neck of the woods, there are large areas where we get “no signal”. This is with Verizon and five miles from I-40.
More towers would be helpful overall.
This was some years ago. I had to step out on the back deck to get a reliable phone call on a hillside in LA. Around the same time we had a family reunion on the shores of south eastern Lake Michigan. AT&T folks had no problem making call. Verizon folks had to walk to the top of the hill to place a call.