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
Grant awarded to improve the security of mobile devices and cellular networks
2 hours ago |
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Smart phones -- like BlackBerrys and iPhones -- have become indispensable to today's highly mobile workforce and tech-savvy youngsters. While these devices keep friends and colleagues just a few thumb-taps ...
New software shows British TV live on iPhone
4 hours ago |
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British broadcaster Sky launched an iPhone application Tuesday which allows viewers to watch live TV on the move and is thought to be the first commercial TV service backed by the broadcaster itself.
NICTA demonstrates new interference-cancellation modem for 3G femtocell networks
11 hours ago |
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(PhysOrg.com) -- NICTA, Australia’s Information and Communications Technology (ICT) Research Centre of Excellence, has successfully demonstrated technology that reduces the amount of radio interference in 3G networks with ...
Google snaps up mobile ad startup for $750 million (Update)
Nov 09, 2009 |
5 / 5 (1) |
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(AP) -- Google Inc. is buying mobile advertising network AdMob for $750 million, underscoring the Internet search leader's determination to ensure its marketing machine reaches the growing number of people surfing the Web ...
Nokia recalls millions of dangerous chargers
Electronics / Consumer & Gadgets
Nov 09, 2009 |
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Nokia, the world's biggest mobile phone maker, issued on Monday a global recall for 14 million faulty chargers made by a subcontractor this year.
iPhone disappoints in China launch: analysts
Electronics / Consumer & Gadgets
Nov 08, 2009 |
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The official launch of Apple's iPhone in China has been disappointing at best for mobile operator China Unicom, with the grey market still booming and competitors offering worthy alternatives, experts say.
Dutch researchers develop technology for pain monitoring
Nov 05, 2009 |
4 / 5 (1) |
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Ten of thousands of patients suffer chronic pain as a result of operations, and this continues even after the wounds caused by the operation have healed. Researchers from the MIRA research institute - the University of Twente’s ...
Review: Motorola's Droid is a serious smart phone
Electronics / Consumer & Gadgets
Nov 04, 2009 |
4.7 / 5 (6) |
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(AP) -- Since its debut in 2007, millions of people have gravitated toward Apple's iPhone, wooed by its sleek hardware, simple user interface and abundance of applications.
Mobile phone inventor wants devices to go back to basics
Electronics / Consumer & Gadgets
Nov 04, 2009 |
2 / 5 (2) |
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The inventor of the mobile phone said Wednesday the devices have become too complex, with a range of features from cameras to music, since he made the first-ever wireless call over three decades ago.
Apple's partner sells 5,000 iPhones in China debut
Electronics / Consumer & Gadgets
Nov 04, 2009 |
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(AP) -- Apple Inc.'s local partner has sold 5,000 iPhones since the smart phone's formal weekend debut in China, a lackluster start after analysts warned the company might be setting prices too high.
T-Mobile says phone service outage resolved (Update)
Nov 04, 2009 |
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(AP) -- Wireless provider T-Mobile USA Inc. says it has cleared up service problems that were interfering with calls and text messaging for about 5 percent of its customers.
China Unicom eyes one million China 3G subscribers per month
Nov 03, 2009 |
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Mobile operator China Unicom said Tuesday it aimed to boost the number of its 3G mobile phone subscribers in China by one million per month, following its launch of Apple's iPhone there.
AIDA Robot Aims To Change The Way We Interact With Our Car (w/ Video)
Technology / Computer Sciences
Nov 01, 2009 |
3.9 / 5 (17) |
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(PhysOrg.com) -- MIT researchers and designers are developing the Affective Intelligent Driving Agent (AIDA) - a new in-car personal robot that aims to change the way we interact with our car. The project ...
Social media require 'Community Relations 2.0'
Other Sciences / Social Sciences
Oct 30, 2009 |
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The rise of social media and real-time advocacy have re-written the community outreach rules companies followed for decades. But many American firms are dragging their feet as they approach "Community Relations 2.0," Boston ...
iPhone comes to China without key feature
Electronics / Consumer & Gadgets
Oct 30, 2009 |
3.8 / 5 (4) |
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(AP) -- Apple's iPhone is making its long-awaited formal debut in the world's most populous mobile phone market, without a key feature and at higher prices than widely available black market models.
