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The Detroit Police Department began using mobile radios in their police cars to communicate with one and other but the signal was very weak.
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By the 1940's most government agencies and higher socio-economic groups had acsess too mobile radios.
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After the first attempt at a car phone service failed in 1947 the first sucsessful car phone was made in 1956. It was bulky, heavy but it worked!
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Dr. Martin Cooper invented a portable hand-held phone that didn't need to be powered through a car. He was the first person to make a mobile phone call.
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It took ten years for the technology that Dr. Cooper invented to become available to the public. The first public cell phones were put out by Motorola.
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Developers in Europe came up with a way to send written messages over the phone -- texting!!
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The smart phone could send and receive emails and messages, but it didn't have a speaker or microphone. This meant it needed a headset to work.
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Apple released its first iphone and it changed the world! It features a touch screen and allowed users to do almost anything they could do from a home computer.
