Post on 09-May-2015
2. Origin
Cell phones may be new devices, but they originated in the 1920s.
Radios were used since 1921. Features were put into these radios in
the 1940s, and they were used by police. The concept of the
cellular phone was developed in 1947 which originated from the
mobile car phone. The concept of the cellular phone was produced by
Bell Laboratories.
3. The first actual cell phone was made in 1973 by Martin Cooper of
Motorola and other assisting inventors who used the idea of the car
phone and applied the technology necessary to make a portable cell
phone possible. Cooper worked on the first portable handheld police
radio. He was also the first to ever make a phone call using a
cellular phone. Cell phones were first made available to the public
in 1984. Back then, they were very large, expensive
instruments.
4. The Federal Communications Commission made a regulation that
limited radio-spectrum frequencies. This is the reason only
twenty-three simultaneous conversations were possible in the same
service area. In 1968 the FCC decided to increase the frequencies
to allow research for better connections. The FCC worked together
with AT&T and Bell Towers to establish broadcast towers. The
towers were small with low power and covered a cell that was a few
miles in radius, but actually covered a larger area.
Thisallowedcallstopassfromtowertotower.
5. The first cellular phones to be created were very large and
bulky. This made them difficult to carry around. The first cell
phone came to the market in 1984 from Motorola and weighed 2
pounds. It was a DynaTac 8000X which was selling for $3, 995. A few
years later, in 1991, the Motorola MicroTacLite was created which
cost $1,000.
6. Pre-Mobile Phones
The electronic components used in cell phones of todays generation
were first developed in the 1960s. During this time, the technology
of cell phone was already available. The problem that persisted
during that time was the user was restricted to a certain block of
areas, which were called cell areas.
7. During this time, the technology for cell phones had been
developed but it was only in 1971 when there was a request for
cellular service. AT&T submitted a request public cellular
service to the FCC in 1982.
8. First Generation Cell phones
The FCC approved it for public use after much deliberation and
testing of the device. Since then, Motorola has been developing the
communication technology of cellular phones.
Cell phones became popular and received demand from the public
during the 1983 to 1989 period.
9. Second Generation Cell phones
During the 1990s, the technology on which the cell phones worked
was called 2G or second generation.2G cell phones were also used to
switch the transmissions in the digital circuit which made it
easier to make calls. 2G cell phones had a faster network which
functions on radio signals.
10. The 2G cell phones were smaller, around 100 to 200 grams. These
were hand-held and were portable. The advancements happened in cell
phones, their batteries, computer chips, etc. Due all these
improvements, the cell phone customer base expanded rapidly.
These replaced the analog network frequencies. Eventually, the
adaption of modern networks made the analog frequencies
obsolete.
11. Third Generation Cell phones
The cell phones used nowadays are the third generation phones. 3G
was soon launched after 2G. However, the standards that are used in
3G cell phones are different from one model of the cell phone to
the next. This essentially depends on the network providers.
12. These cell phones could also message other users via SMS (Short
Messaging Service), send emails and access the Internet, stream
live videos, stream radio, and use the Wi-Fi.