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Unformatted text preview: dealing with teen texters involved 552 teens in the sample
and has a margin of error of 5 percentage points. A brief history of the mobile phone as a technology The idea for cellular telephony originated in the US. The first cellular call and the first
call from a hand held cellular device also were placed in the US. The cell phone merges the landline telephony system with wireless communication. The
landline telephone was first patented in 1876. Mobile radio systems have been used since
the early 1900 ’s in the form of ship to shore radio, and were installed in some police cars
in Detroit starting in 1921. The blending of landline telephone and radio communication
came after the Second World War. The first commercially available "mobile radiophone
service" that allowed calls from fixed to mobile telephones was offered in St. Louis in
1946. By 1964 there were 1.5 million mobile phone users in the US. 8 This was a non cellular system that made relatively inefficient use of the radio bandwidth. In addition,
the telephones were large, energy intensive car -mounted devices. According to
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This document was uploaded on 03/12/2014 for the course INFORMATIO 101 at Rutgers.
- Fall '13