Cellular telephones 9 Mobile communication systems 9 Cellular telephone services industry 6 Cellular telephone systems 5 Social aspects 4 Wireless communication systems 4 Attitudes 2 Consumer satisfaction 2 Consumers 2 Dissertations 2 Dissertations, Academic 2 Brand choice 1 Brand loyalty 1 Broadband communication systems 1 Cell phones 1 Cellular telephone equipment industry 1 Code division multiple access 1 Consumers' preferences 1 Customer services 1 Design and construction 1 Designs and plans 1 Digital communications 1 Economic aspects 1 Equipment and supplies 1 Forecasting 1 Gateways (Computer networks) 1 General Packet Radio Service 1 Global system for mobile communications 1 Industrial productivity 1 Instant messaging 1