News tagged with cell phone
Technology convergence may widen the digital divide
(Phys.org) -- Technology is helping communication companies merge telephone, television and Internet services, but a push to deregulate may leave some customers on the wrong side of the digital divide during this convergence, ...
May 17, 2012 |
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Mini-projector for smartphones
Their very small displays sometimes make smartphones diffi cult to operate. In the future, a projector will help: if the cell phone is standing on a table, for instance, it can project a large-format display ...
Technology / Hi Tech & Innovation
May 10, 2012 |
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Cafe conquerors use high-tech gadgets to make public spaces their own... for hours
Increasingly "plugged-in" customers are grabbing extra seats, counter space and table tops by using cell phones, laptops and cups of steaming hot coffee to shield others from seemingly public spaces, according to two marketing ...
Other Sciences / Economics & Business
May 08, 2012 |
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US drivers see texting risks but still do it: survey
Most young US drivers believe that texting and phone use at the wheel is dangerous, but many do it anyway, a survey showed Tuesday.
May 08, 2012 |
5 / 5 (1) |
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Next-generation nanoelectronics: A decade of progress, coming advances
Traditional silicon-based integrated circuits are found in many applications, from large data servers to cars to cell phones. Their widespread integration is due in part to the semiconductor industry's ability to continue ...
May 03, 2012 |
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Researchers combat global disease with a cell phone, Google Maps and a lot of ingenuity
(Phys.org) -- In the fight against emerging public health threats, early diagnosis of infectious diseases is crucial. And in poor and remote areas of the globe where conventional medical tools like microscopes and cytometers ...
Chemistry / Analytical Chemistry
Apr 27, 2012 |
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3Qs: Mobile tracking in criminal investigations
Last week, the American Civil Liberties Union released a new report revealing that law-enforcement agencies frequently use cell-phone tracking data provided by wireless carriers — often without a warrant. ...
Apr 16, 2012 |
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Carriers agree to disable stolen phones for good
(AP) -- Cellphone companies and the government are trying to make it as difficult to use a stolen cellphone as it is to sell a stolen car.
Apr 10, 2012 |
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Using cell phones to detect harmful airborne substances
The lab of a University of California, Riverside Bourns College of Engineering professor was named on Tuesday, April 3 after Innovation Economy Corporation, a Riverside company that plans to commercialize ...
Nanotechnology / Bio & Medicine
Apr 04, 2012 |
1 / 5 (1) |
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Many US police use cell phones to track: study
Many US police departments use cell phone tracking, often without court orders, to find suspects and investigate criminal cases, according to a study released Monday.
Apr 02, 2012 |
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China's mobile phone subscriptions top a billion
China said Friday it had broken the barrier of one billion mobile phone accounts at the end of February, as more people in the world's most populous country ditch fixed phones.
Mar 30, 2012 |
1 / 5 (1) |
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New plastics 'bleed' when cut or scratched — and then heal like human skin
A new genre of plastics that mimic the human skin's ability to heal scratches and cuts offers the promise of endowing cell phones, laptops, cars and other products with self-repairing surfaces, scientists reported today. ...
Mar 26, 2012 |
4.9 / 5 (9) |
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Using virtual worlds to 'soft control' people's movements in the real one
Eighty-eight percent of Americans now own a cell phone, forming a massive network that offers scientists a wealth of information and an infinite number of new applications. With the help of these phone users — and their ...
Technology / Computer Sciences
Mar 16, 2012 |
4.2 / 5 (6) |
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Google: Technology is making science fiction real
(AP) -- Google executive chairman Eric Schmidt predicted Tuesday that rapid advances in technology will soon transform science fiction into reality - meaning people will have driverless cars, small robots ...
Feb 28, 2012 |
4.7 / 5 (6) |
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Samsung announces the Galaxy Beam Smartphone with built-in projector
(PhysOrg.com) -- Cell phones are great, but one of their limitations is the size of the screen, which of necessity has to be small. To get around this problem, engineers have been for years toying with the ...
Electronics / Consumer & Gadgets
Feb 27, 2012 |
4.7 / 5 (14) |
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Mobile phone
A 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
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
