Yeah. My parents live in a rural area and coverage has been abysmal for years. They barely even get 4G/LTE signal outside the house. They see ads promising them more speed and more coverage but in reality, it's going the opposite way for them. And they don't understand it at all.
Now that the telcos are turning off the 3G network soon in that region, it's going to be even worse. And because there's not a lot of people in that rural region, it's not worth it for the cell companies to improve anything.