A mobile phone or mobile (also called cellphone and handphone,[1] as well as cell phone, wireless phone, cellular phone, cellular device, cell, cellular telephone, mobile telephone or cell telephone) is a long-range, electronic device Electronics is a branch of science and technology that deals with the controlled flow of electrons. The ability to control electron flow is usually applied to information handling or device control. Electronics is distinct from electrical science and technology, which deals with the generation, distribution, control and application of electrical used for mobile telecommunications Mobile telecommunications is the assisted transmission of signals over a distance for the purpose of communication to or from a mobile device or user. Mobile telecommunication is a technology that allows the user to be connected while on the move, from home, office, car or even from the sea (mobile telephony Most current mobile phones connect to a cellular network of base stations , which is in turn interconnected to the public switched telephone network (PSTN) (the exception is satellite phones), text messaging Text messaging, or texting, is a colloquial term referring to the exchange of brief written messages between mobile phones, over cellular networks. While the term most often refers to messages sent using the Short Message Service , it has been extended to include messages containing image, video, and sound content, such as MMS messages. Individual or data transmission) over a cellular network A cellular network is a radio network made up of a number of radio cells each served by at least one fixed-location transceiver known as a cell site or base station. These cells cover different land areas to provide radio coverage over a wider area than the area of one cell, so that a variable number of portable transceivers can be used in any one of specialized base stations The term base station can be used in the context of land surveying, wireless computer networking, and wireless communications known as cell sites A cell site is a term used primarily in North America for a site where antennas and electronic communications equipment are placed on a radio mast or tower to create a cell in a cellular network. A cell site is composed of a tower or other elevated structure for mounting antennas, and one or more sets of transmitter/receivers transceivers, digital.
Most current cell phones connect to a cellular network A cellular network is a radio network made up of a number of radio cells each served by at least one fixed-location transceiver known as a cell site or base station. These cells cover different land areas to provide radio coverage over a wider area than the area of one cell, so that a variable number of portable transceivers can be used in any one consisting of switching points and base stations The term base station can be used in the context of land surveying, wireless computer networking, and wireless communications (cell sites) owned by a mobile network operator A mobile network operator , also known as mobile phone operator (or simply mobile operator or mobo ), carrier service provider (CSP), wireless service provider, wireless carrier, mobile phone operator, or cellular company, is a telephone company that provides services for mobile phone subscribers (the exception is satellite phones A satellite telephone, satellite phone, or satphone is a type of mobile phone that connects to orbiting satellites instead of terrestrial cell sites. Depending on the architecture of a particular system, coverage may include the entire Earth, or only specific regions, which are mobile but not cellular). In addition to the standard voice function, current mobile phones may support many additional services GSM services are a standard collection of applications and features available to mobile phone subscribers all over the world. The GSM standards are defined by the 3GPP collaboration and implemented in hardware and software by equipment manufacturers and mobile phone operators. The common standard makes it possible to use the same phones with, and accessories The typical cell phone has become somewhat obsolete; current cell phones offer embedded features such as memory databases for storing frequently called numbers, locking features for theft deterrence, crystallized displays, internet connection capabilities, and other useful features. With the addition of popular culture, science, and marketing the, such as SMS Short Message Service or Silent Messaging Service is a communication service standardized in the GSM mobile communication system, using standardized communications protocols allowing the interchange of short text messages between mobile telephone devices. SMS text messaging is the most widely used data application on the planet, with 2.4 billion for text messaging Text messaging, or texting, is a colloquial term referring to the exchange of brief written messages between mobile phones, over cellular networks. While the term most often refers to messages sent using the Short Message Service , it has been extended to include messages containing image, video, and sound content, such as MMS messages. Individual, email Electronic mail, often abbreviated as email or e-mail, is a method of exchanging digital messages, designed primarily for human use. E-mail systems are based on a store-and-forward model in which e-mail computer server systems accept, forward, deliver and store messages on behalf of users, who only need to connect to the e-mail infrastructure,, packet switching Packet switching is a network communications method that groups all transmitted data, irrespective of content, type, or structure into suitably-sized blocks, called packets. The network over which packets are transmitted is a shared network which routes each packet independently from all others and allocates transmission resources as needed. The for access to the Internet The Internet is a global system of interconnected computer networks that use the standardized Internet Protocol Suite to serve billions of users worldwide. It is a network of networks that consists of millions of private and public, academic, business, and government networks of local to global scope that are linked by copper wires, fiber-optic, gaming, Bluetooth Bluetooth is an open wireless protocol for exchanging data over short distances from fixed and mobile devices, creating personal area networks . It was originally conceived as a wireless alternative to RS232 data cables. It can connect several devices, overcoming problems of synchronization, infrared Infrared radiation is electromagnetic radiation whose wavelength is longer than that of visible light (400-700 nm), but shorter than that of terahertz radiation (100 µm - 1 mm) and microwaves (~30,000 µm). Infrared radiation spans roughly three orders of magnitude (750 nm and 100 µm), camera A camera is a device that records images, either as a still photograph or as moving images known as videos or movies. The term comes from the camera obscura , an early mechanism of projecting images where an entire room functioned as a real-time imaging system; the modern camera evolved from the camera obscura with video recorder and MMS Multimedia Messaging Service, or MMS, is a telecommunications standard for sending messages that include multimedia objects . MMS is an extension of the SMS standard, allowing longer message lengths and using WAP to display the content. Its most popular use is sending photographs from camera-equipped handsets, although it is also popular as a for sending and receiving photos A photograph is an image created by light falling on a light-sensitive surface, usually photographic film or an electronic imager such as a CCD or a CMOS chip. Most photographs are created using a camera, which uses a lens to focus the scene's visible wavelengths of light into a reproduction of what the human eye would see. The process and and video Video is the technology of electronically capturing, recording, processing, storing, transmitting, and reconstructing a sequence of still images representing scenes in motion, MP3 player A digital audio player, sometimes referred to as an MP3 player, is a consumer electronic device that has the primary function of storing, organizing and playing audio files. Some DAPs are also referred to as portable media players as they have image-viewing and/or video-playing support, radio Radio is the transmission of signals by modulation of electromagnetic waves with frequencies below those of visible light. Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of space. Information is carried by systematically changing some property of the radiated waves, such as and GPS The Global Positioning System is a U.S. space-based global navigation satellite system. It provides reliable positioning, navigation, and timing services to worldwide users on a continuous basis in all weather, day and night, anywhere on or near the Earth.
As opposed to a radio telephone A radiotelephone is a communications device that allows two or more people to talk using radio. There is disagreement about the definition of the term. There is a conflict among British English usage, American English usage, and historic use, a cell phone offers full duplex A duplex communication system is a system composed of two connected parties or devices that can communicate with one another in both directions communication, automatised calling to and paging from a public switched telephone network The public switched telephone network is the network of the world's public circuit-switched telephone networks, in much the same way that the Internet is the network of the world's public IP-based packet-switched networks. Originally a network of fixed-line analog telephone systems, the PSTN is now almost entirely digital and includes mobile as (PSTN The public switched telephone network is the network of the world's public circuit-switched telephone networks, in much the same way that the Internet is the network of the world's public IP-based packet-switched networks. Originally a network of fixed-line analog telephone systems, the PSTN is now almost entirely digital and includes mobile as), and handoff In cellular telecommunications, the term handoff refers to the process of transferring an ongoing call or data session from one channel connected to the core network to another. In satellite communications it is the process of transferring satellite control responsibility from one earth station to another without loss or interruption of service (American English American English , also known as United States English, or U.S. English, is a set of dialects of the English language used mostly in the United States. Approximately two thirds of native speakers of English live in the United States)/handover (British British English, or UK English or English English , is the broad term used to distinguish the forms of the English language used in the United Kingdom from forms used elsewhere. There is confusion whether the term refers to English as spoken in the British Isles or to English as spoken in Great Britain, though in the case of Ireland, there are/European English The English language in Europe, as a native language, is mainly spoken in the United Kingdom and the Republic of Ireland. Outside of these countries, it has a special status in Jersey and Guernsey , in Gibraltar (one of the British overseas territories), Malta and Cyprus (two former British colonies). In other parts of Europe, English is spoken) 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 A cordless telephone or portable telephone is a telephone with a wireless handset that communicates via radio waves with a base station connected to a fixed telephone line, usually within a limited range of its base station . The base station is on the subscriber premises, and attaches to the telephone network the same way a corded telephone does, 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 The International Telecommunication Union is the second-oldest international organization still in existence , established to standardize and regulate international radio and telecommunications. It was founded as the International Telegraph Union in Paris on 17 May 1865. Its main tasks include standardization, allocation of the radio spectrum, and estimated that mobile cellular subscriptions worldwide would reach approximately 4.1 billion by the end of 2008.[2] Mobile phones have gained increased importance in the sector of Information and communication technologies for development Information and Communication Technologies for Development is a general term referring to the application of Information and Communication Technologies (ICTs) within the field of socioeconomic development. ICT4D concerns itself directly with overcoming the barriers of the digital divide. ICTs can be applied either in the direct sense, where their in the 2000s and have effectively started to reach the bottom of the economic pyramid In economics, the bottom of the pyramid is the largest, but poorest socio-economic group. In global terms, this is the four billion people who live on less than $2 per day, typically in developing countries. The phrase “bottom of the pyramid” is used in particular by people developing new models of doing business that deliberately target that.[3]
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Washington Times
Authorities last week seized backpacks and cellular phones from apartments in Queens, NY, where Mr. Zazi visited. The fatal train bombings in London and ...
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hu, 16 Jul 2009 17:06:30 GM
You have put it off long enough now, it is time to buy a . cellular phone. . You have known this for along time but you keep putting it off. You hate to shop and drive from store to store to get the best deal so you just put it off. ...
Q. 1) Have you experienced any negative aspects of owning a cellular phone? 2) Would you be willing to give up having one? 3) Do cellular phones make people "dumber"? (meaning: if they don't have their cell phone with them, they are useless)
Asked by ane123 - Sun Dec 3 18:06:10 2006 - - 3 Answers - 0 Comments
A. i think cell phones now give people an excuse for being late all the time--i.e. all they have to do is call someone and say they are running late, instead of actually being polite and being on time!...negative aspects for me---it rings way too much, and lots of time i dont feel like talking anyway, or people use it to track me down/keep track of me; i'd love to give mine up; don't think it makes you dumber, just less polite and more prone to getting in an accident...
Answered by Dianne C - Sun Dec 3 18:17:05 2006
