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
New rechargeable zinc-air batteries coming soon
Oct 29, 2009 |
4.4 / 5 (45) |
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(PhysOrg.com) -- A new breed of rechargeable zinc-air batteries is soon to be available, and may replace lithium-ion batteries in cell phones, laptops and other consumer items. Lithium-ion batteries store ...
Paraben's CSI Stick Copies Data from Cell Phones
Electronics / Consumer & Gadgets
Sep 01, 2008 |
4.1 / 5 (34) |
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Beware the next time someone borrows your cell phone or you leave it unattended. You may become the next victim of having all your cell phone data copied to the CSI Stick.
WHO study suggests link between cell phones and tumors
Oct 27, 2009 |
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(PhysOrg.com) -- Preliminary results of an International investigation by the World Health Organization (WHO) suggest there may be a "significantly increased risk" of some types of brain tumors after use of ...
Choosing a Low Radiation Cell Phone
Electronics / Consumer & Gadgets
Sep 10, 2009 |
4.4 / 5 (12) |
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(PhysOrg.com) -- An Environmental Working Group (EWG) team has released a consumer guide on the radiation levels emitted by over 1,000 cell phones sold in the U.S. The guide is the most comprehensive ever ...
Charge your cell phone using light, courtesy SunCore
Oct 26, 2009 |
4 / 5 (12) |
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SunCore is a little known Irvine, Calif.-based company that's on the cusp of shipping some potentially revolutionary technology.
Spinning carbon nanotubes spawns new wireless applications
Nanotechnology / Nanomaterials
Mar 09, 2009 |
4.6 / 5 (10) |
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The University of Cincinnati has long been known for its world-record-breaking carbon nanotubes. Now researchers at the University of Cincinnati have discovered new uses by spinning carbon nanotubes (CNTs) ...
The Memoir: Samsung, T-Mobile USA Introduce New 8-Megapixel Camera Phone
Electronics / Consumer & Gadgets
Feb 06, 2009 |
4.1 / 5 (11) |
0
Samsung Mobile and T-Mobile USA today announced the upcoming availability of the Samsung Memoir, a full touch-screen mobile phone equipped with an 8-megapixel camera and premium multimedia features, placing ...
DIY 'tinkerers' create more than mere toys from spare parts
Apr 29, 2009 |
4.5 / 5 (10) |
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To Ken Delahoussaye, an old computer, cell phone, camera or even a child's toy is much more than a disposable device. Each is something he can take apart and fuse with other parts to create something totally new.
Car key jams teen drivers' cell phones
Dec 11, 2008 |
3.3 / 5 (12) |
10
University of Utah researchers have developed an automobile ignition key that prevents teenagers from talking on cell phones or sending text messages while driving.
Bias affects cell phone cancer risk findings
Oct 15, 2009 |
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(PhysOrg.com) -- A group of South Korean and American researchers has found studies of possible links between cell phones and brain tumors and other cancers vary in quality, and those suggesting there is little ...
Spacesuits with artificial intelligence may look for life on Mars
Space & Earth / Space Exploration
Nov 04, 2009 |
5 / 5 (7) |
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(PhysOrg.com) -- Astronauts may in future be wearing spacesuits equipped with artificial intelligence (AI) and digital eyes, turning them into what the researchers call cyborg astrobiologists.
ACLU: US Attorney OK'd GPS to track cell phones
Apr 23, 2009 |
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(AP) -- The American Civil Liberties Union says the U.S. Attorney's Office for New Jersey under Christopher Christie, now a GOP gubernatorial candidate, tracked the whereabouts of citizens through their cell phones without ...
Cellphones may spread superbugs in hospitals: study
Mar 06, 2009 |
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Cell phones belonging to hospital staff were found to be tainted with bacteria -- including the drug-resistant MRSA superbug -- and may be a source of hospital-acquired infections, according to study released Friday.
Venezuela unveils 14-dollar mobile phone
Electronics / Consumer & Gadgets
Mar 05, 2009 |
4 / 5 (7) |
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Venezuela is to start selling in May a mobile phone it is billing as one of the world's cheapest: a 14-dollar handset that includes an MP3 player, radio and camera.
Researchers create cell phones for sign language
Dec 02, 2009 |
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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.
