I know Motorola made the first cell phone with the Dynatac, I am trying to figure out what manufacturer made the second.
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Answer by Timeflo
Nokia
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Saturday, June 22, 2013
what was the second manufacturer of a cell phone?
Question by Nick T: what was the second manufacturer of a cell phone?
I know Motorola made the first cell phone with the Dynatac, I am trying to figure out what manufacturer made the second.
Best answer:
Give your answer to this question below!
I know Motorola made the first cell phone with the Dynatac, I am trying to figure out what manufacturer made the second.
Best answer:
Give your answer to this question below!
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Do you mean commercial manufacturer? There has been many scientists and engrs. involved after Dr. Cooper, and his portable base/handset DynaTac is technically not a cellphone..but read on:
ReplyDeleteIn the fall of 1972, Motorola project manager Dr. Martin Cooper proposed a number of different communications systems using the new frequencies. In March and April 1973, Cooper and his team demonstrated several of these hand-built systems for Washington legislators, FCC commissioners and the press. One of these devices was a handheld radiotelephone system dubbed the DynaTAC (Dynamic Total Area Coverage), which used the 900 MHz bandwidth and a version of AT&T's cell scheme. While technically not a "cell phone" – the single base/handset DynaTAC system more closely resembled what would eventually become the cordless telephone – it was the first demonstration of a wireless portable telephone, the Rosetta Stone for what would become the cellular phone.
AT&T developed the advanced mobile phone system (AMPS), the first regular U.S. cellular phone system using microwave transmissions, which began trials in 1977 in Chicago. After five years of tests, full commercial AMPS service was officially initiated on October 12, 1983 in Chicago. In its first year, there were a half million subscribers.
The merge of AT&T and Motorola did not actually happen, AT&T wanted to monopolize the "market". So technically, it was AT&T who "manufactured" the second cellphone which eventually led to massive use by the military and the public.