15946. CELLULAR PHONES. This paper argues that cellular phones were the most successful product of the 1990s. The paper covers the development of the technology prior to the 1990s, and the growth in the use of cell phones since that time. It also discusses the reasons for the product’s popularity, problems and controversies, and the ongoing search for improvements and new features. KEYWORDS: cell mobile phones history product innovation. Written 2003. 16 pages; 51 footnotes; 15 bibliographic sources. 3,724 words.