Communication on mobile phones reminds me of an idea Edgar Cayce spoke about in the 1940's. Called the sleeping psychic, he used a trance-like state to discover possibilities he'd never thought possible. A simple Christian man didn't want to find out about a complicated afterlife. However, every time he relaxed for a trance, his family recorded his words, now published in many fascinating books.
He travelled through the different levels people achieve after they die and came to a happy place that we might think of as heaven. Here, peaceful people work on things they love like painting or participate in discussions in what we call the universal consciousness. They build their homes using the mind and communicate with their friends without need for devices like mobile phones. They could travel just by wishing it so—no need for airplanes.
Perhaps, mankind is striving for the heaven they left behind and will return to again.