We tend to think of large cities as melting pots—places where people from all sorts of backgrounds can mingle and interact. But according to new research, people in big cities tend to primarily interact with other individuals ...
Social Sciences
Nov 29, 2023
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46
Cellphone bans in middle and high schools across the U.S. are raising questions about how effective locking away students' devices on the heels of a pandemic—when classroom instruction was all but virtual—will be.
Social Sciences
Aug 24, 2023
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1
Cellphones—the ultimate distraction—keep children from learning, educators say. But in attempts to keep the phones at bay, the most vocal pushback doesn't always come from students. In some cases, it's from parents.
Education
Nov 4, 2022
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3
If you're like most cellphone users, at one point you have experienced a cracked screen.
Nanomaterials
Oct 18, 2021
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152
Lockdowns saved lives during the global SARS-CoV-2 pandemic. But as much as they have slowed the spread of COVID-19, there have been some unintended consequences.
Social Sciences
Jul 20, 2021
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56
Scientists from Texas A&M have developed an extension to an ordinary cellphone that turns it into an instrument capable of detecting chemicals, drugs, biological molecules, and pathogens. The advance is reported in Reviews ...
General Physics
May 4, 2021
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318
A June 2018 decision rendered by the Supreme Court of the United States established an interesting principle on digital privacy in a case related to a criminal proceeding.
Consumer & Gadgets
Jan 15, 2019
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9
Over the Thanksgiving travel period an estimated 30 million Americans plan to fly to enjoy turkey and all the trimmings with far-flung family and friends. The huge increase in air travelers and ever more full – and oversold ...
Telecom
Nov 19, 2018
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3
Each year, more parents send their young child to elementary school equipped with a smartphone.
Social Sciences
Oct 2, 2018
0
2
Police generally need a warrant to look at records that reveal where cellphone users have been, the Supreme Court ruled Friday in a big victory for privacy interests in the digital age.
Security
Jun 22, 2018
0
5
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
