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How Phones Have Changed Over Time.
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Method of communication
A Virginia Dentist/Scientist, Dr. Mahlon Loomis, develops a method of communicating through the earth’s atmosphere by using an electrical conductor.~Robert D. Keith -
Telegraph
The first trans-Atlantic telegraph is built~Robert D. Keith -
Mobile Radios
The Police Department in Detroit, Mich. begins installing mobile radios, operating around 2 MHz, in their squad cars. They encounter many problems such as overcrowding on the channels and terrible interference. ~Robert D. Keith -
Radio-Car-Phones
AT&T comes out with the first radio-car-phones that can be used only on the highway between New York and Boston; they are known as push-to-talk phones. The system operates at frequencies of about 35 to 44 MHz, but once again there is a massive amount of interference in the system. AT&T declares the project a failure. ~Robert D. Keith -
Car Phones
The first real car phones, not car radios, come into play accross the United States. Although, the system is still using push-to-talk phones, it is an improved version that acctually works. However, the units are big and bulky, and require a personal radio operator to switch the calls. A simular system appeared in Sweden a few years earlier. ~Robert D. Keith -
Cellular Technology
One of the most important years in cell phone evolution. The Cellular Technology Industry Association is created and helps to make the industry into an empire. One of its biggest contributions is when it helped create TDMA phone technology, the most evolved cell phone yet. It becomes available to the public in 1991. ~Robert D. Keith -
First Motorola Flip Phone
The first Motorola Flip Phone was invented. -
First Camera Phone
The first camera cell phone was invented. -
No More Pay Phones
BellSouth announces that it is leaving the pay phone business because there is too much competition from cell phones. ~Robert D. Keith -
Music Cell Phone
The Motorola Rokr, released in September 2005, was the first music phone to incorporate Apple's music software. It allowed users to transfer songs purchased from iTunes to the phone for listening on the go. -
