Downloadable software for use in mobile telephone communications via a global computer network, intranets and the internet; downloadable ring tones, graphics and music via a global computer network and wireless devices; computer software for use in managing mobile telephones, telephone headsets and cellular telephone features, namely phone book, calendar, ring tone, short message service and picture; electrical cables for use in transmitting data between and among personal computers and mobile telephones; infrared transceivers for use in transmitting data between and among personal computers and mobile telephones; adapters for telecommunication and computer equipment including radio modems, namely transceivers for use in transmitting data between and among personal computers and mobile telephones; computer software for use in developing other computer software; computer software for managing wireless content delivery; computer software to enable transmission of photographs and video via mobile telephones; computer telephony software for use in enabling telephone activities to be performed through a computer; connecting electrical cables