News tagged with cell phone

Related topics: iphone · text message · mobile devices · mobile phone · smart phones

Teens risk health with night texting, talking

To many parents, text messaging is an enigma -- a practice their children engage in when they could just make a phone call or walk down the street to their friends' houses. It seems to be a strange but harmless means of communication.

Jul 17, 2009
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Probing Question: Are cell phones safe?

An estimated 5 billion people around the world hold cell phones up to their ears nearly every day. Many of them wonder if they might be receiving more than news from people on the other end. Are mobile phones dosing us with ...

Feb 04, 2011
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Bias affects cell phone cancer risk findings

( -- 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 or no risk ...

Oct 15, 2009
popularity0 comments 5 weblog

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.

This text uses material from Wikipedia, licensed under CC BY-SA

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