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.
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News tagged with mobile
Engineering professor creates mobile lab for testing bridges
22 hours ago |
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(PhysOrg.com) -- Civil engineering students at the University of Rhode Island will soon take to the roadways to apply what they have learned in the classroom in real-world analyses of bridges, buildings and ...
iPhones are musical instruments in new course and ensemble (w/ Video)
Dec 01, 2009 |
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(PhysOrg.com) -- iPhones are being used as musical instruments in a new course at the University of Michigan.
Nokia sues top LCD, CRT display makers
Dec 01, 2009 |
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(AP) -- Nokia Corp., the world's biggest mobile phone maker, said Tuesday it has filed suits against several leading liquid crystal display makers - including Philips, Toshiba, Sharp and Samsung - for alleged price fixing.
Smart phones allow quick diagnosis of acute appendicitis
Nov 30, 2009 |
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Radiologists can accurately diagnose acute appendicitis from a remote location with the use of a handheld device or mobile phone equipped with special software, according to a study presented today at the annual meeting of ...
iPhone's debut in S.Korea means paradigm shift: experts
Nov 28, 2009 |
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Apple's top selling iPhone made its debut in South Korea Saturday with experts saying the iconic smartphone is likely to serve as a wake-up call for an IT industry basking in an isolated market.
Modified iPhones Are Compromised By New Worm
Electronics / Consumer & Gadgets
Nov 25, 2009 |
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(PhysOrg.com) -- Several research security firms have reported a new worm attack against jail broken iPhones, dubbed "Ikee.B or "Duh", this worm searches for personal and banking information.
Teachers begin using cell phones for class lessons
Nov 27, 2009 |
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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.
Lenovo buying back mobile phone business
Nov 27, 2009 |
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(AP) -- Personal computer maker Lenovo Group said Friday it is joining the race to develop products that link phones and PCs by buying back a mobile phone business that it sold last year.
Apple's iPhone set to make splash in South Korea
Nov 27, 2009 |
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(AP) -- The iPhone's arrival in South Korea is generating considerable buzz among consumers and industry watchers amid expectations it will shake up a market dominated by world-beating domestic manufacturers.
S.Korea halves ceiling on text messages to fight spam
Nov 25, 2009 |
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South Korean authorities on Wednesday halved the daily limit on text messages sent out by mobile phones as part of a campaign against spam, officials said.
Nokia to ax 220 R&D jobs in Japan
Nov 24, 2009 |
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(AP) -- Nokia Corp. said Tuesday it is axing 220 jobs at research and development units in Japan as the world's largest mobile phone maker continues to cut costs.
EU drops Qualcomm antitrust probe
Nov 24, 2009 |
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(AP) -- European Union antitrust regulators on Tuesday dropped a monopoly abuse probe into wireless chip maker Qualcomm Inc. after mobile phone companies withdrew complaints about high royalty fees.
Google buying display ad startup Teracent
Nov 23, 2009 |
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Google is acquiring Web display advertising startup Teracent, the Internet giant announced on Monday.
Gartner forecasts 2.8 percent growth in PC sales in 2009
Nov 23, 2009 |
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Worldwide sales of personal computers, which had been forecast to decline this year, will instead post modest gains, Gartner research group said Monday.
Spotify launches application for Nokia phones
Nov 23, 2009 |
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Swedish streaming software Spotify announced on Monday the launch of a music application for the Symbian platform, used by the world's biggest mobile phone maker Nokia and other smartphones.
