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WeChat or Weixin in Chinese ( Chinese: 微信; pinyin: Wēixìn ( listen ⓘ); lit. 'micro-message') [a] is a Chinese instant messaging, social media, and mobile payment app developed by Tencent. First released in 2011, it became the world's largest standalone mobile app in 2018 [4] [5] with over 1 billion monthly active users.
In February 2008, the Library of Congress created the LCCN Permalink service, providing a stable URL for all Library of Congress Control Numbers. Format. In its most elementary form, the number includes a year and a serial number. The year has two digits for 1898 to 2000, and four digits beginning in 2001.
The United States is a leader in the development of artificial intelligence technology and has maintained a space program since the late 1950s, with plans for long-term habitation of the Moon. [309] [310] In 2022, the United States was the country with the second-highest number of published scientific papers. [311]
Comcast Corporation (simply known as Comcast, and formerly known as American Cable Systems and Comcast Holdings ), [note 1] incorporated and headquartered in Philadelphia, is an American multinational telecommunications and media conglomerate. [8] The corporation is the second-largest broadcasting and cable television company in the world by ...
AVIATION SERVICE Italy ICAO Code no longer allocated, defunct AXQ Action Airlines (Action Air Charter) ACTION AIR United States AVR Active Aero Charter, Inc. ACTIVE AERO United States RRM Acvila Air-Romanian Carrier: AIR ROMANIA Romania defunct ADC AD Astra Executive Charter: AD ASTRA Poland VUE AD Aviation: FLIGHTVUE United Kingdom ADE Ada Air ...
AT&T Inc. (with "AT&T" being an abbreviation for its former name, the American Telephone and Telegraph Company) is an American multinational telecommunications holding company headquartered at Whitacre Tower in Downtown Dallas, Texas. [4] It is the world's fourth-largest telecommunications company by revenue and the largest wireless carrier in ...
In telecommunications, 5G is the fifth-generation technology standard for cellular networks, which cellular phone companies began deploying worldwide in 2019, and is the successor to 4G technology that provides connectivity to most current mobile phones. Like its predecessors, 5G networks are cellular networks, in which the service area is ...
Customer Support is a range of services to assist customers in making cost effective and correct use of a product. It includes assistance in planning, installation, training, troubleshooting, maintenance, upgrading, and disposal of a product. [1] Regarding technology products such as mobile phones, televisions, computers, software products or ...