Mobile phone
hideA mobile phone or mobile (also called cellphone and handphone, as well as cell phone, wireless phone, cellular phone, cell, cellular telephone, mobile telephone or cell telephone) is a long-range, electronic device used for mobile voice or data communication over a network of specialized base stations known as cell sites. In addition to the standard voice function of a mobile phone, telephone, current mobile phones may support many additional services, and accessories, such as SMS for text messaging, email, packet switching for access to the Internet, gaming, Bluetooth, infrared, camera with video recorder and MMS for sending and receiving photos and video, MP3 player, radio and GPS. Most current mobile phones connect to a cellular network consisting of switching points and base stations (cell sites) owned by a mobile network operator (the exception is satellite phones, which are mobile but not cellular).
As opposed to a radio telephone, a mobile phone offers full duplex communication, automatised calling to and paging from a public switched telephone network (PSTN), handoff (am. English) or handover (European term) during a phone call when the user moves from one cell (base station coverage area) to another. A mobile phone offers wide area service, and should not be confused with a cordless telephone, which also is a wireless phone, but only offer telephony service within a limited range, e.g. within a home or an office, through a fixed line and a base station owned by the subscriber.
The International Telecommunication Union estimated that mobile cellular subscriptions worldwide would reach approximately 4.1 billion by the end of 2008. Mobile phones have gained increased importance in the sector of Information and communication technologies for development in the 2000s and have effectively started to reach the bottom of the economic pyramid.
For more information about Mobile phone, read the full article at
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News tagged with cell phone
Researchers create cell phones for sign language
Dec 02, 2009 |
4.6 / 5 (8) |
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(PhysOrg.com) -- Cornell researchers and colleagues have created cell phones that allow deaf people to communicate in sign language, the same way hearing people use phones to talk.
GPS cell phone apps challenge standalone devices
Electronics / Consumer & Gadgets
Nov 28, 2009 |
3.6 / 5 (5) |
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(AP) -- The growth of cell phones with global-positioning technology is making life uncertain for the makers of personal navigational devices that help drivers figure out where they are and where to go.
Switching cell phones takes emotional toll
Electronics / Consumer & Gadgets
Nov 18, 2009 |
4.7 / 5 (3) |
1
She's gone. We were the best of friends, constant companions -- literally, because I carried her day and night in the left-front pocket of my jeans. For five years we roamed the world together, or at least the United States, ...
Researchers patent enabling technology for spread-spectrum systems
Nov 17, 2009 |
4 / 5 (2) |
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If you've ever gotten the dreaded "network busy" message while trying to make a cell phone call, you've experienced the complication of sharing a single network with numerous other users.
EU assembly adopts Internet, phone user rights
Nov 25, 2009 |
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(AP) -- The European Parliament has endorsed new telecom rules that would give phone and Internet users more rights and allow them to appeal to national courts if they are cut off for illegal file-sharing.
Texting, tweeting ought to be viewed as GR8 teaching tools, scholar says
Dec 10, 2009 |
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The impact of text messaging on the decline of formal writing among teens has been debated in pedagogical circles ever since cell-phone ownership became an adolescent rite of passage in the mid-2000s. But ...
Teachers begin using cell phones for class lessons
Nov 27, 2009 |
2 / 5 (2) |
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(AP) -- Ariana Leonard's high school students shuffled in their seats, eagerly awaiting a cue from their Spanish teacher that the assignment would begin. "Take out your cell phones," she said in Spanish.
Nokia Booklet has flashy looks, but little substance
Electronics / Consumer & Gadgets
Dec 10, 2009 |
1.5 / 5 (2) |
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If the iPhone ushered in the era of cell phones that act like computers, then the recently released Nokia Booklet 3G netbook is an attempt to bring some of the features of a smart phone to a computer.
Bling bling with your ring ring: Dekoden craze sees cell phones get a touch of glitz, glamour
Electronics / Consumer & Gadgets
Nov 27, 2009 |
1 / 5 (1) |
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Cell phone owners are ringing the changes and putting a smile on their dial by adorning their mobiles with ornamental stickers, charms and beads -- and the craze just keeps getting bigger.
Sony Ericsson closes NC, other sites as HQ moves
Nov 18, 2009 |
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(AP) -- Cell phone handset maker Sony Ericsson will move its North American headquarters from North Carolina to Atlanta and close a half-dozen sites worldwide as it retrenches against what it expects will be a tighter market ...
Grant to help zoo visitors learn more about science with their cell phones
Nov 30, 2009 |
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Zoo visitors may soon use their cell phones to "Call the Wild" as part of a project led by University of Florida researchers to help the public learn more about the nature of science.
NIST develops experimental validation tool for cell phone forensics
Dec 02, 2009 |
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Viewers of TV dramas don't focus on the technology behind how a forensics crime team tracks a terrorist or drug ring using cell phone data, but scientists at the National Institute of Standards and Technology do. NIST researchers ...
No change in brain tumor incidence during a time when cell phone usage increased
Dec 03, 2009 |
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There was no substantial change in brain tumor incidence among adults 5 to 10 years after cell phone usage sharply increased, according to a new brief communication published online December 3 in the Journal of the National Ca ...
Gifts for your favorite geek
Electronics / Consumer & Gadgets
Dec 04, 2009 |
not rated yet |
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In the spirit of the season, I've picked out 10 geeky gifts that cost less than $100. Some are practical. Some are fun. All would be good additions to your gift list for friends and family -- or your own wish list. (Ranked ...
Texas Instruments raises 4Q profit, sales targets
Dec 08, 2009 |
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(AP) -- Texas Instruments is raising its fourth-quarter profit and sales outlook, citing an improving market for chips used in cell phones and other electronic gadgets.
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