Cell phones

In 1947, research into cell phones technology began with an examination of the limited mobile (car) phones of the times. Scientists realized that by using small cells (range of service area) with frequency reuse they might be able to increase the traffic capacity of mobile phones substantially. The research for cell phone development came long before the cordless phone was even released in the 1970's. These cell phones, were made in 1973, by Motorola by Dr. Martin Cooper. The cost was about four thousand dollars. It was nicknamed the boot, because of it's shape.