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In 1958 development began on a similar system for motorists in the USSR. [27] The " Altay" national civil mobile phone service was based on Soviet MRT-1327 standard. The main developers of the Altay system were the Voronezh Science Research Institute of Communications (VNIIS) and the State Specialized Project Institute (GSPI). In 1963 the service started in Moscow, and by 1970 was deployed in 30 cities across the USSR. Versions of the Altay system are still in use today as a trunking system in some parts of Russia. 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] Farley, Tom (1 January 2006). "Cellular Telephone Basics". Privateline.com. Archived from the original on 5 December 2015 . Retrieved 30 December 2012. To store photos and music on the phone, you’ll need to buy a MicroSD memory card. We’ve noted which options have a storage card slot in our roundup. Network connectivity

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. Gerken, Tom (12 December 2022). "December 2024 set as date for universal phone charger in EU". BBC News . Retrieved 4 March 2023. In David Lodge's novel 'Nice Work' from 1988, Vic Wilcox, managing director of a Birmingham engineering firm, As well as partnering with Securicor in Cellnet, BT sold phones through its shops. They were branded BT butCommon Charging and Local Data Connectivity". Open Mobile Terminal Platform. 11 February 2009. Archived from the original on 29 March 2009 . Retrieved 11 February 2009. Car radiophone paved way for mobiles". BT Today. 28 October 2009. Archived from the original on 8 August 2014. Martin Cooper – The Inventor of the Cell Phone". Cellular.co.za. Archived from the original on 23 November 2015 . Retrieved 23 March 2012. Universal phone charger standard approved". ITU (Press release). 22 October 2009. Archived from the original on 23 December 2009 . Retrieved 22 June 2010.

Most are in colour, but we have included one with a monochrome interface in our list. Storage space This section needs additional citations for verification. Please help improve this article by adding citations to reliable sourcesin this section. Unsourced material may be challenged and removed. ( April 2012) ( Learn how and when to remove this template message) Disney will offer mobile content". Media Week. 20 September 2005. Archived from the original on 2 September 2012 . Retrieved 16 October 2012. von 1900 bis 1999"[from 1900 to 1999]. Deutsches Telefon Museum (in German). 29 December 2007 . Retrieved 28 May 2013.a b c d e "1946: First Mobile Telephone Call". AT&T Labs. 2011. Archived from the original on 12 December 2012 . Retrieved 24 April 2012. In December 1947, Douglas H. Ring and W. Rae Young, Bell Labs engineers, proposed hexagonal cells for mobile phones in vehicles. [20] At this stage, the technology to implement these ideas did not exist, nor had the frequencies been allocated. Two decades would pass before Richard H. Frenkiel, Joel S. Engel and Philip T. Porter of Bell Labs expanded the early proposals into a much more detailed system plan. It was Porter who first proposed that the cell towers use the now-familiar directional antennas to reduce interference and increase channel reuse (see picture at right) [21] Porter also invented the dial-then-send method used by all cell phones to reduce wasted channel time. Pros seem to outdo cons in new phone charger standard". News.com. 20 September 2007 . Retrieved 26 November 2007. [ permanent dead link] 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.

Oehmke, Ted (January 6, 2000). "Cell Phones Ruin the Opera? Meet the Culprit". The New York Times . Retrieved 2009-05-26. Agreement on Mobile phone Standard Charger". GSM World (Press release). Archived from the original on 17 February 2009 . Retrieved 3 December 2017. You’ll want it to be large enough to type your messages and see who you’re calling, and the options on our list range from a smaller 1.7 inches diagonally to just under 3 inches across.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. Saeed, Fahd Ahmad. "Capacity Limit Problem in 3G Networks". Purdue School of Engineering . Retrieved 23 April 2010. 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] Lindmark, Sven (January 2004). "Telecom Dynamics: History of State of Swedish Telecom". Vinnova Analysis, VA. Wireless Phone Cases Dismissed". San Francisco Call. Vol.104, no.37. 7 July 1908 . Retrieved 21 October 2013– via California Digital Newspaper Collection.

One size-fits-all mobile phone charger: IEC publishes first globally relevant standard". International Electrotechnical Commission. 1 February 2011 . Retrieved 20 February 2012.

Satariano, Adam (7 June 2022). "Europe wants to help clear out your drawer full of chargers". The New York Times . Retrieved 4 March 2023. Corya, Robert (April 5, 1973). " Portable Phone Here: Motorola". The Indianapolis News (Indianapolis, Indiana). p. 56. a b Gow, Gordon A. & Smith, Richard K. (2006). Mobile and wireless communications: an introduction. Maidenhead: McGraw-Hill International (UK). p.23. ISBN 0-335-21761-3. In the 1990s, the 'second generation' mobile phone systems emerged. Two systems competed for supremacy in the global market: the European developed GSM standard and the U.S. developed CDMA standard. These differed from the previous generation by using digital instead of analog transmission, and also fast out-of-band phone-to-network signaling. The rise in mobile phone usage as a result of 2G was explosive and this era also saw the advent of prepaid mobile phones. West Germany had a network called A-Netz launched in 1952 as the country's first public commercial mobile phone network. In 1972 this was displaced by B-Netz which connected calls automatically.