China's capital on Wednesday closed 60 subway stations, more than 10% of its vast system, as an additional measure against the spread of the coronavirus.
May 04, 2022
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Lu Muying died on April 1 in a government quarantine facility in Shanghai, with her family on the phone as doctors tried to resuscitate her. She had tested positive for COVID-19 in late March and was moved there in line with ...
Apr 21, 2022
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Longstanding fears that using mobile phones may increase the risk of developing a brain tumor have been reignited recently by the launch of 5G (fifth generation) mobile wireless technologies. Mobile phones emit radiofrequency ...
Mar 30, 2022
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About 18% of patients with injuries sustained in motor vehicle crashes (MVCs) acknowledge that distracted driving contributed to the crash—although the true rate is likely even higher, according to a report in The Journal ...
Mar 29, 2022
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A report published today sheds new light on the plight of children and young people in care in England during the COVID-19 pandemic, with one in five self-harming and being at risk of mental ill health.
Mar 23, 2022
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The Omicron variant may be testing your resolve to begin 2022 with a commitment to wellness. Certainly, it seems there is a shared sense of frustration and fatigue across the country in the face of yet another pandemic surge. ...
Jan 13, 2022
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As hospitalists—physicians who provide general medical care to hospitalized patients—become increasingly common, a new study provides a better understanding of both missed and potential opportunities for integrating mobile ...
Jan 04, 2022
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As we head towards the end of the year, office get-togethers, Christmas lunches and New Year's parties are upon us. It seems like a prime opportunity for young people to be drinking the night away.
Dec 28, 2021
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The locked-down Chinese city of Xi'an on Monday tightened COVID-19 controls to the "strictest" level, banning residents from driving cars around town in an effort to control the country's worst outbreak in 21 months.
Dec 27, 2021
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Overall exposure of preadolescent children to electromagnetic fields emitted by mobile communication devices during the day is not associated with sleep disturbances, according to a study led by the Barcelona Institute for ...
Dec 20, 2021
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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
