The first-generation mobile computing enabled analogue voice and no data, the second-generation enabled digital voice and some data the third-generation will enable digital voice and high-speed data, the fourth-generation should enable IP based voice and multimedia data. Then fifth-generation...

Multiple mobile phone (M²P) usage has become an increasing practice in Nigeria but little is known about the factors propelling it or related communication processes. An examination of its operations reveals interaction with economic and social factors for reduction in call costs and management...