Ever since it was first invented by Alexander Graham Bell, telephones or communication devices continue to evolve according to the times and needs of its users. Initially the phone can only be used as a long distance voice loudspeaker and digital message sender. The features offered are very standard like calculator, stopwatch and light game. With features like that, at that time the phone is a luxury tool and a marker of social status with exorbitant prices. But no less than 1 decade of the development of mobile phones very rapidly, ranging from OS (operating system) Java, Symbian, android with various versions up to a more exclusive OS that is blackberry and Iphone.
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