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Evolutionofcellphone 110906185514-phpapp011


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Evolutionofcellphone 110906185514-phpapp011

  1. 1. Rodrigo Vega Camila Ventoza Evolution of Cell Phone
  2. 2. Origin  Cell phones may be new devices, but they originated in the 1920’s. Radios were used since 1921. Features were put into these radios in the 1940’s, 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. 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
  4. 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.
  5. 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 MicroTac Lite was created which cost $1,000.
  6. 6. Pre-Mobile Phones  The electronic components used in cell phones of today’s 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
  7. 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. 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. 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. 10.  These replaced the analog network frequencies. Eventually, the adaption of modern networks made the analog frequencies obsolete.  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.
  11. 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. 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.