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the firts generation was started with the DynaTAC 8000X created bymartin cooper.
in this mobile could only be called -
the second generation use the system gsm and offer a upgrade of the components .
the update did what could be sent messages -
the third generation offer a upgrade of the components and increase the functions of the phone for example : search information in the browser -
in the fourth generation they have multiple update but the most important are that there is greater speed and more coverage -
in the fifth generation the most important upgrade is more speed of discharge ,higher video quality , more storage space and more ram space