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ASHATA Retro Brick Cell Phone, 2G 80's Retro Mobile Phone 32MB+32MB Dual Card + Memory Card, Supoort Bluetooth, Voice Change, Flashlight and Power Bank, etc(Black)

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is the next version of cellular mobile telephone standards. The 5G standards include millimetre-band radio spectrum to allow data speeds up to 1 gigabit per second, and reduce latency (the processing time to handle a data transmission) between handset and network to a few milliseconds. 5G standards also include low-band and mid-band spectrum similar to existing networks. Telephone companies are introducing 5G technology starting in 2019. Satariano, Adam (7 June 2022). "Europe wants to help clear out your drawer full of chargers". The New York Times . Retrieved 4 March 2023. Lam, Crystal; Liu, Harry (22 October 2007). "How to conform to China's new mobile phone interface standards". EE Times . Retrieved 22 June 2010. Cai Yan (31 May 2007). "China to enforce universal cell phone charger". EE Times . Retrieved 25 August 2007. Lane, Clare (17 June 2009). "John F. Mitchell, 1928–2009: Was president of Motorola from 1980 to '95". Chicago Tribune. Archived from the original on 6 July 2009 . Retrieved 29 July 2009.

The Wireless Association Announces One Universal Charger Solution to Celebrate Earth Day". CTIA (Press release). 22 April 2009. Archived from the original on 14 December 2010 . Retrieved 22 June 2010. Universal Charging Solution". GSM World. Archived from the original on 26 June 2010 . Retrieved 22 June 2010. A cellular telephone switching plan was described by Fluhr and Nussbaum in 1973, [23] and a cellular telephone data signaling system was described in 1977 by Hachenburg et al. [24] Emergence of automated services [ edit ] Fluhr, Zachary C. & Nussbaum, Eric (November 1973). "Switching Plan for a Cellular Mobile Telephone System". IEEE Transactions on Communications. 21 (11): 1281–1286. doi: 10.1109/TCOM.1973.1091569.


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 1946 in St. Louis, Missouri. Shortly after, AT&T offered Mobile Telephone Service. A wide range of mostly incompatible mobile-telephone services offered limited coverage areas and only a few available channels in urban areas. As calls were transmitted as unencrypted analog signals, anyone with radio equipment that could receive those frequencies could eavesdrop. The commercial introduction (in Japan in 1979) of cellular technology, which allowed re-use of frequencies many times in small adjacent areas covered by relatively low-powered transmitters, made widespread adoption of mobile telephones economically feasible. Drastic changes have taken place in both the networking of wireless communication and the prevalence of its use, with smartphones becoming common globally and a growing proportion of Internet access now done via mobile broadband. Miller, Stephen (June 20, 2009). "Motorola Executive Helped Spur Cellphone Revolution, Oversaw Ill-Fated Iridium Project". Wall Street Journal. Archived from the original on April 20, 2016 . Retrieved August 2, 2021. Gerken, Tom (12 December 2022). "December 2024 set as date for universal phone charger in EU". BBC News . Retrieved 4 March 2023. Mobile phone charger plugs prior to the universal standard (left to right) Samsung E900, Motorola V3, Nokia 6101 and Sony Ericsson K750. The Micro-USB interface is found on chargers for feature phones and smartphones. The USB-C interface is increasingly found on (chargers for) smartphones. [56]

In the five years from 1985 to 1990, Nokia and Ericsson joined Motorola as well as electronics giants NEC and Philips and a host of The first analog cellular system widely deployed in North America was the Advanced Mobile Phone System (AMPS). [15] It was commercially introduced in the Americas on 13 October 1983, Israel in 1986, and Australia in 1987. AMPS was a pioneering technology that helped drive mass market usage of cellular technology, but it had several serious issues by modern standards. It was unencrypted and easily vulnerable to eavesdropping via a scanner; it was susceptible to cell phone "cloning" and it used a Frequency-division multiple access (FDMA) scheme and required significant amounts of wireless spectrum to support.Despite the capacity improvement offered by IMTS, demand outstripped capacity. In agreement with state regulatory agencies, AT&T limited the service to just 40,000 customers system wide. In New York City, for example, 2,000 customers shared just 12 radio channels and typically had to wait 30 minutes to place a call. [15] Radio Common Carrier [ edit ] A mobile radio telephone. Many of the iconic early commercial cell phones such as the Motorola DynaTAC Analog AMPS were eventually superseded by Digital AMPS (D-AMPS) in 1990, and AMPS service was shut down by most North American carriers by 2008.

Lindmark, Sven (January 2004). "Telecom Dynamics: History of State of Swedish Telecom". Vinnova Analysis, VA. Nellis, Blake (March 2, 2015). " The Evolution of the Cell Phone". The Technocrat. The Montana Standard (Butte, Montana). p. T6.On October 13, 1983, David D. Meilahn placed the first commercial wireless call on a DynaTAC from his 1983 Mercedes-Benz 380SL to Bob Barnett, former president of Ameritech Mobile Communications, who then placed a call on a DynaTAC from inside a Chrysler convertible to the grandson of Alexander Graham Bell, who was in Germany for the event. [12] The call, made at Soldier Field in Chicago, is considered to be a major turning point in communications. Later, Richard H. Frenkiel, the head of system development at Bell Laboratories, said about the DynaTAC: "It was a real triumph; a great breakthrough." [13] Publications [ edit ] Motorola had long produced mobile telephones for cars that were large and heavy and consumed too much power to allow their use without the automobile's engine running. Mitchell's team, which included Martin Cooper, developed portable cellular telephony, and Mitchell was among the Motorola employees granted a patent for this work in 1973; the first call on the prototype was completed, reportedly, to a wrong number. [7] Newer technology has been developed and rolled out in a series of waves or generations. The "generation" terminology only became widely used when 3G was launched, but is now used retrospectively when referring to the earlier systems.

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