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A mobile phone (or cellphone [a]) is a portable telephone that can make and receive calls over a radio frequency link while the user is moving within a telephone service area, as opposed to a fixed-location phone ( landline phone ).
7 de may. de 2024 · Martin Cooper, American engineer who led the team that in 1972–73 built the first mobile cell phone, the DynaTAC (Dynamic Adaptive Total Area Coverage), and made the first cell phone call, on April 3, 1973. He is widely regarded as the father of the cellular phone.
3 de abr. de 2023 · While demonstrated in 1973, it would be another decade of development before Motorola’s cell phone — the world’s first — made it to market, and commercial cellular service for handheld ...
[1] The history of mobile phones covers mobile communication devices that connect wirelessly to the public switched telephone network. While the transmission of speech by signal has a long history, the first devices that were wireless, mobile, and also capable of connecting to the standard telephone network are much more recent.
3 de abr. de 2023 · Innovation | April 3, 2023. From ‘the Brick’ to the iPhone, the Cellphone Celebrates 50 Years. As the technology turns 50, science fiction might hint at the cellphone’s next chapter. Engineer...
Home. Objects and stories. The invention of mobile phones. Published: 12 November 2018. Hide story contents. Story Content. How were mobile phones invented? What were the first mobile phone networks? The first calls on the UK mobile network. Were mobile phones popular? Gallery of classic mobile phones. Making mobile calling international.
20 de mar. de 2024 · Calvin Wankhede. •. March 20, 2024. In just a few decades, mobile phones have gone from a luxury reserved for the elite to an essential tool for billions of users. From the first in-car phones of...
