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The evolution of cell phones

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The evolution of cell phones Powered By Docstoc
					Presented by Elmira Petrosyan
  The mobile phone or cell phone is a long-
range, portable electronic device used for mobile
communication. In addition to the standard voice
function of a telephone, current mobile phones
can support many additional services such as
SMS for text messaging, email, packet switching
for access to the Internet, and MMS for sending
and receiving photos and video. Most current
mobile phones connect to a cellular network of
base stations (cell sites), which is in turn
interconnected to the public switched telephone
network (PSTN)
•   Various cell phones from the past 10–15 years.
    Legend:
    1. NEC Cellstar 500 series (1992)
    2. Nokia 2110 series (1994)
    3. Nokia 5120 (1998)
    4. Kyocera 2135 (2002)
    5. Audiovox CDM8300 (2002)
    6. Samsung SCH-A650 (2004)
•   In 1945, the zero generation (0G - radio telephone) of mobile telephones was
    introduced. 0G mobile telephones were not officially categorized as mobile
    phones, since they did not support the automatic change of channel frequency
    during calls, which allows the user to move from one cell (the base station
    coverage area) to another cell, a feature called "handover".

•   The first commercial cellular network was launched in Japan by NTT in 1979.
    Fully automatic cellular networks were first introduced in the early 1980s (the
    1G generation) with the Nordic Mobile Telephone (NMT) system in 1981. This
    was followed by a boom in mobile telephone usage, particularly in Northern
    Europe. 1G (or 1-G) is short for first-generation wireless telephone technology,
    cellphones. These are the analog cellphone standards. 1G networks use the
    radio (analog ) signals.

•   The first "modern" network technology on digital 2G (second generation)
    cellular technology was launched in 1991 in Finland on the GSM standard
    which also marked the introduction of competition in mobile telecoms.
      A digital system is one that uses discrete values (often electrical voltages),
    representing numbers or non-numeric symbols such as letters or icons, for
    input, processing, transmission, storage, or display, rather than a continuous
    range of values ( as in an analog system).
• A decade later, 3G (Third Generation) was again launched in
  Japan. Until the early 1990s, most mobile phones were too
  large to be carried in a jacket pocket, so they were typically
  installed in vehicles as car phones. With the miniaturization of
  digital components, mobile phones have become increasingly
  handy over the years. 3G typically provide service at 5-10 Mb
  per second.3G networks are wide area cellular telephone
  networks which evolved to incorporate high-speed internet
  access and video telephony. In December 2005, 100 3G
  networks were operating in 40 countries, according to the
  Global mobile Suppliers Association, in Asia, Europe, Canada
  and the USA

• 4G (also known as beyond 3G), an acronym for Fourth-
  Generation Communications System, is a term used to
  describe the next step in wireless communications. A 4G
  system will be able to provide a comprehensive IP solution
  where voice, data and streamed multimedia can be given to
  users on an "Anytime, Anywhere" basis, and at higher data
  rates than previous generations.
Iphones
  • The iPhone is a multimedia,
    Internet-enabled mobile phone
    designed and marketed by Apple
    Inc. It has a multi-touch screen with
    virtual keyboard and buttons. The
    iPhone's functions include those of
    a camera phone and a portable
    media player ("iPod"), in addition to
    text messaging and visual
    voicemail. It also offers Internet
    services including e-mail, web
    browsing. It is a mobile phone that
    uses the GSM
  • The iPhone was introduced, first in
    the United States on June 29, 2007
                     Manufacturers

• Nokia Corporation is currently the world's largest manufacturer of
  mobile telephones, with a global device market share of
  approximately 36% in 2007. Other mobile phone manufacturers
  include Apple Inc., Audiovox (now UT Starcom), Benefon, BenQ-
  Siemens, High Tech Computer Corporation (HTC), Fujitsu, Kyocera,
  LG Mobile, Mitsubishi, Motorola, NEC, Neonode, Panasonic,
  Pantech Curitel, Philips, Research In Motion, Sagem, Samsung,
  Sanyo, Sharp, Siemens, Sierra Wireless, SK Teletech, Sonim
  Technologies, Sony Ericsson, T&A Alcatel,Toshiba, and Verizon.
  There are also specialist communication systems related to (but
  distinct from) mobile phones.
• The mobile phone manufacturers can be grouped into two. The top
  five are available in practically all countries and comprise about 75%
  of all phones sold. A second tier of small manufacturers exists with
  phones mostly sold only in specific regions or for niche markets. The
  top five in order of market share are Nokia, Motorola, Samsung,
  SonyEricsson and LG.
• A network effect is a characteristic that causes
  a good or service to have a value to a potential
  customer which depends on the number of other
  customers who own the good or are users of the
  service. In other words, the number of prior
  adopters is a term in the value available to the
  next adopter.
• One consequence of a network effect is that the
  purchase of a good by one individual indirectly
  benefits others who own the good — for
  example by purchasing a telephone a person
  makes other telephones more useful. This type
  of side-effect in a transaction is known as an
  externality in economics, and externalities
  arising from network effects are known as
  network externalities.
                Subscriptions
• Global System for Mobile communications(GSM ) is
  the most popular standard for mobile phones in the
  world, 82% of the global mobile market uses this
  standard . GSM is used by over 2 billion people across
  more than 212 countries.

• The key advantage of GSM systems to consumers has
  been better voice quality and low-cost the Short
  message service (SMS, also called "text messaging").
  Like other cellular standards, GSM allows network
  operators to offer roaming services so that subscribers
  can use their phones on GSM networks all over the
  world.
• Internet - various information and
 services, such as electronic mail, online
 chat, file transfer, and other resources of
 the World Wide Web (WWW).
• MMS - Multimedia Messaging Service
 is a standard for telephony messaging
 systems that allows sending messages
 that include multimedia objects (images,
 audio, video, rich text). MMS for sending
 and receiving photos and video.
           MAGTI –                   a cellular communication operator

  SIM Card –                      5 GEL
  Mobile to mobile –              0.288 GEL
  Mobile to Georgia-              0.288 GEL
Mobile to International(00) - 0.7-0.9-1.9 GEL
                     Geocell(LAI-LAI)
SIM Card -                   10(5) GEL
Monthly fee(ADVANCE) -       7(5) GEL
Goecell to Geocell –      0.259( 0.28) GEL
Goecell to other GSM -     0.288 GEL
Goecell to Wire phone -    0.288 GEL
Goecell to International-  0.9-1.9 GEL
               BEELINE

SIM Card -                 5 GEL
Starting balance -         10 (5)GEL
Beeline to Beeline–       0.02 (O.27) GEL
Beeline to other GSM - 0.288(O.27) GEL
Beeline to Wire phone - 0.288 (0.27) GEL
Beeline to International- 0.65-1.9 GEL

				
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posted:10/27/2011
language:English
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