working principles of mobile phones in wikipedia

Camera phone Wikipedia

The principal advantages of camera phones are cost and compactness indeed for a user who carries a mobile phone anyway, the addition is negligible. Smartphones that are camera phones may run mobile appliions to add capabilities such as geotagging and image stitching. Also smartphones can use their touch 

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Motorola DynaTAC Wikipedia

DynaTAC is a series of cellular telephones manufactured by Motorola, Inc. from 1983 to 1994. The Motorola DynaTAC 8000X commercial portable cellular phone received approval from the U.S. FCC on September 21, 1983. A full charge took roughly 10 hours, and it offered 30 minutes of talk time. It also offered an LED 

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Smartphone Wikipedia

In the midlate 1990s, many people who had mobile phones carried a separate dedied PDA device, running early versions of operating systems such as Palm OS, Newton OS, Symbian or Windows CE/Pocket PC. These operating systems would later evolve into early mobile operating systems. Most of the "smartphones" 

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Mobile security Wikipedia

A central paradigm in mobile operating systems is the idea of a sandbox. mechanisms to ensure these appliions are safe for the phone itself, for other appliions and data on the system, and for the user. We can cite, as a defense mechanism, the Chain of trust in iOS.

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Mobile phone industry in Japan Wikipedia

DoCoMo was spun off in 1991 from Nippon Telegraph and Telephone (NTT), NTT DoCoMo first offered its secondgeneration service known as Personal Digital Cellular (PDC). It now offers a 3G service using WCDMA technology known as FOMA. The company is operating a world band WCDMA network at 2100 MHz.

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History of mobile phones Wikipedia

Modern cellular networks allow automatic and pervasive use of mobile phones for voice and data communiions. In the United States, engineers from Bell Labs began work on a system to allow mobile users to place and receive telephone calls from automobiles, leading to the inauguration of mobile service on 17 June 

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Windows Phone Wikipedia

Windows 10 Mobile was announced on January 21, 2015, as a mobile operating system for smartphones and tablets running on ARM architecture. Its primary focus is unifiion with Windows 10, its PC counterpart, in software and services in accordance with this strategy, the Windows 

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Mobile Web Wikipedia

Mobile web access today still suffers from interoperability and usability problems. Interoperability issues stem from the platform fragmentation of mobile devices, mobile operating systems, and browsers. Usability problems are centered on the small physical size of the mobile phone form factors (limits on display resolution 

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Mobile telephony Wikipedia

Since the world is operating quickly to 3G and 4G networks, mobile traffic through video is heading high. It is expected that by end of 2018, the global traffic will reach an annual rate of 190 exabytes/year. This is the result of people shifting to smart phones nowadays. It is predicted by 2018, mobile traffic will reach by 10 

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Cell site Wikipedia

A cellphone may not work at times because it is too far from a mast, or because the phone is in a loion where cell phone signals are attenuated by thick building walls, hills, or other structures. The signals do not need a clear line of sight but greater radio interference will degrade or eliminate reception. When many people 

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Mobile phone Wikipedia

Feature phone is a term typically used as a retronym to describe mobile phones which are limited in capabilities in contrast to a modern smartphone. Feature phones typically provide voice calling and text messaging functionality, in addition to basic multimedia and Internet capabilities, and other services offered by the 

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Mobile phone use in schools Wikipedia

The use of mobile phones in school settings or environments is a topic of debate. Supporting parents believe that cell phones address their safety concerns by enabling them to communie with their children. Teachers and administrators opposed to mobile phone usage in schools believe that they cause disruption, and 

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Landline Wikipedia

A landline telephone is a phone that uses a metal wire or optical fiber telephone line for transmission as distinguished from a mobile cellular line, which uses radio waves for transmission. In 2003, the CIA reported approximately 1.263 billion main telephone lines worldwide. China had more 

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Mobile phone radiation and health Wikipedia

The effect of mobile phone radiation on human health is a subject of interest and study worldwide, as a result of the enormous increase in mobile phone usage throughout the world. As of 2015, there were 7.4 billion subscriptions worldwide, though the actual number of users is lower as many users own more than one 

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Cellphone surveillance Wikipedia

Cellphone surveillance, also known as cellphone spying, may involve the tracking, bugging, monitoring, interception and recording of conversations and text messages on mobile phones. It also encompasses the monitoring of people's movements, which can be tracked using mobile phone signals when phones are turned 

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Mobile phone features Wikipedia

The features of mobile phones are the set of capabilities, services and appliions that they offer to their users. Mobile phones are often referred to as feature phones, and offer basic telephony. Handsets with more advanced computing ability through the use of native code try to differentiate their own products by 

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Cellular network Wikipedia

This enables a large number of portable transceivers (e.g., mobile phones, tablets and laptops equipped with mobile broadband modems, pagers, etc.) to communie with each other and with fixed transceivers and telephones anywhere in the network, via base stations, even if some of the transceivers are moving through 

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Mobile telephony Wikipedia

Since the world is operating quickly to 3G and 4G networks, mobile traffic through video is heading high. It is expected that by end of 2018, the global traffic will reach an annual rate of 190 exabytes/year. This is the result of people shifting to smart phones nowadays. It is predicted by 2018, mobile traffic will reach by 10 

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Mobile computing Wikipedia

These networks are usually available within range of commercial cell phone towers. High speed network wireless LANs are inexpensive but have very limited range. Security standards: When working mobile, one is dependent on public networks, requiring careful use of VPN. Security is a major concern while concerning 

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Mobile radio Wikipedia

Mobile radio or mobiles refer to wireless communiions systems and devices which are based on radio frequencies, and where the path of communiions is movable on either end. There are a variety of views about what constitutes mobile equipment. For US licensing purposes, mobiles may include handcarried, 

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Mobile media Wikipedia

While mobile phone independent technologies and functions may be new and innovative (in relation to changes and improvements in media capabilities in respect to their function what they can do when and where and what they look like, in regard to their size and shape) the need and desire to access and use media 

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Mobile media Wikipedia

While mobile phone independent technologies and functions may be new and innovative (in relation to changes and improvements in media capabilities in respect to their function what they can do when and where and what they look like, in regard to their size and shape) the need and desire to access and use media 

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Mobile phone features Wikipedia

The features of mobile phones are the set of capabilities, services and appliions that they offer to their users. Mobile phones are often referred to as feature phones, and offer basic telephony. Handsets with more advanced computing ability through the use of native code try to differentiate their own products by 

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Mobile phone accessories Wikipedia

Mobile phone accessories include any hardware that is not integral to the operation of a mobile smartphone as designed by the manufacturer. Contents. [hide]. 1 Cases 2 Antilost devices 3 Phone charms 4 Mass storage 5 Chargers and external batteries 6 Photo accessories 7 Selfie stick 8 Smartphone tripod mount 

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Mobile phone Simple English Wikipedia, the free encyclopedia

When a mobile phone is switched on, its radio receiver finds a nearby mobile phone network base station, and its transmitter sends a request for service. Computers in the base station check if the phone is allowed to use the network. The base station covers an area called a cell.

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Mobile technology Wikipedia

Many types of mobile operating systems (OS) are available for smartphones, including Android, BlackBerry OS, webOS, iOS, Symbian, Android, a mobile OS developed by Google, is the first completely opensource mobile OS, meaning that it is free to any cell phone mobile network.

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Mobile device Wikipedia

Mobile devices may run mobile operating systems that allow thirdparty apps specialized for said capabilities to be installed and run. Early smartphones were joined in the late 2000s by larger, but otherwise the same, tablets. Input and output is now usually via a touchscreen interface. Phones/tablets and personal digital 

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Mobile phone tracking Wikipedia

Mobile phone tracking is the ascertaining of the position or loion of a mobile phone, whether stationary or moving. Localization may occur either via multilateration of radio signals between (several) cell towers of the network and the phone, or simply via GPS. To loe a mobile phone using multilateration of radio signals, 

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