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The development of mobile / wireless telephony began in 1918. The wireless telephony was tested on military trains between Berlin and Zossen.
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In 1924, the development continued with telephone connection on public trains between Berlin and Hamburg.
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Mobile phones for automobiles became availible for some telephone companies.
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Motorola was the first company to produce a handheld mobile phone.
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Motorola kept on developing. This was their first truly portable and handheld phone.
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Again, Motorola shows development and comes up with the first handheld digital device.
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Motorola again shows constant development. They make the first ever clamshell phone, and also one of the first mbile phones with a display on.
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From 1996 and onwards, there has been a constant development and changing design etc in mobile phones throughout the world. I beilieve most of us recognise many of the phones produces from this stage on.
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In 2007, Apple came in and took the lead ... they created the first Iphone. After this - they have aproximately released a new iphone every year. Always with the newest and best software availible.