Wireless Internet 157 Wireless communication systems 61 Wireless internet 33 Mobile communication systems 24 Mobile computing 21 Security measures 15 Global system for mobile communications 14 TCP/IP (Computer network protocol) 14 Computer networks 12 Personal communication service systems 8 Wireless Application Protocol (Computer network protocol) 8 Wireless LANs 8 Cellular telephone systems 7 Broadband communication systems 6 Multimedia communications 6 Smartphones 6 Standards 6 Application software 5 Development 5 Computer network protocols 4 Design 4 Electronic commerce 4 Electronic mail systems 4 Extranets (Computer networks) 4 Internet 4 Internet programming 4 Internetworking (Telecommunication) 4 Multiplexing 4 Spread spectrum communications 4 Web sites 4