Cell
Phones
The
mobile phone, cellular phone, or simply cell phone is a long-range,
portable electronic device used for mobile communication that
uses a network of specialized base stations known as cell
sites. 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) (the exception is satellite phones).
TNokia
Corporation is currently the world's largest manufacturer
of mobile telephones, with a global device market share of
approximately 36% in Q1 of 2007.[5] 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 (Matsushita
Electric), Pantech Curitel, Philips, Research In Motion, Sagem,
Samsung, Sanyo, Sharp, Siemens, Sierra Wireless, SK Teletech,
Sonim Technologies, Sony Ericsson, T&A Alcatel, and Toshiba.
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, Samsung, Motorola, SonyEricsson and LG.
Apple
iPhone Cell Phones
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, and
local Wi-Fi connectivity. It is a quad-band mobile phone that
uses the GSM standard, hence has international capability.
It supports the Enhanced Data Rates for GSM Evolution (EDGE)
data technology.
Following
the success of iPod, Apple announced the iPhone in January
2007. The announcement was preceded by rumors and speculations
that circulated for several months. The iPhone was introduced,
first in the United States on June 29, 2007 with much media
frenzy and then in the United Kingdom, Germany and France
in November 2007. It was named Time magazine's Invention of
the Year in 2007. A new version of Apple's iPhone is expected
to be introduced in 2008 that is capable of operating on faster
3G cellular networks.
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