Example image of eyePlorer eyePlorer map for 'Mobile phone': Base station Cell site Cellular network Electronics Mobile telecommunications Mobile telephony Text messaging Cordless telephone Radiotelephone Satellite phone Duplex (telecommunications) Handoff Public switched telephone network Mobile network operator Bluetooth Camera Digital audio player E-mail Global Positioning System GSM services Infrared Internet Mobile phone accessories Multimedia Messaging Service Packet switching Photograph Radio SMS Video International Telecommunication Union Bottom of the pyramid Information and communication technologies for development Murray, Kentucky Nathan Stubblefield AT&T Bell Labs Reginald Fessenden World War II George Sweigert Mobile radio telephone Las Vegas, Nevada Martin Cooper (inventor) Motorola Nippon Telegraph and Telephone 1G Nordic Mobile Telephone Federal Communications Commission Motorola DynaTAC 2G Elisa Oyj