History of mobile phones
A cellular telephone switching plan was described by Fluhr and Nussbaum in 1973, and a cellular telephone data signaling system was described in 1977 by Hachenburg et al.
Consumer adoption of technological innovations
It is often the case that every new technology introduces public discomfort. While the first handheld cellular phone was developed in 1973, it was not until the early 2000s that they technology became truly ubiquitous. While a part of the slow growth of cellular phones can be attributed to its design, another big part was the technology being considered esoteric by many.