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Cell phone in use, c. 2006. Nokia cell phone that allows users to take still photographs and video clips. cell phone tower; microwave tower Sending Text Messages Motorola DynaTAC 8000X Motorola customer using a cell phone in 1984 businessman with cell phone Motorola's MicroTAC flip cellular phone 2008 Nokia Videophone Computer and Cell Phone
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cell phone

communications
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Also known as: cellular phone, cellular telephone, mobile cellular phone, mobile phone
Last Updated: • Article History
Cell phone in use, c. 2006.
cell phone
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Category: Science & Tech
In full:
cellular telephone
Key People:
Martin Cooper
Related Topics:
iPhone
BlackBerry
MicroTAC
DynaTAC
advanced mobile phone system
On the Web:
University of California, Santa Barbara - Media Arts and Technology - The Cell Phone Technology (Mar. 15, 2024)
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cell phone, wireless telephone that permits telecommunication within a defined area that may include hundreds of square miles, using radio waves in the 800–900 megahertz (MHz) band. To implement a cell-phone system, a geographic area is broken into smaller areas, or cells, usually mapped as uniform hexagrams but in fact overlapping and irregularly shaped. Each cell is equipped with a low-powered radio transmitter and receiver that permit propagation of signals between cell-phone users. See also mobile telephone. ...(100 of 77 words)

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