1. A communication device comprising: a microphone; a speaker; an input device; a display; an antenna; a voice communicating implementer, wherein voice communication is implemented with another device in a wireless fashion; a caller's information displaying implementer, wherein upon receiving a phone call, a caller's information which indicates the phone number and/or name of the caller is displayed; an icon software implementer, wherein the software program indicated by an icon selected by the user is executed; and a multiple language mode implementer, wherein the language mode selected by the user is implemented, wherein said language mode selected is one of a plurality of language modes including a first language mode and a second language mode; wherein when said first language mode is selected by the user, a first command which is the command for the user to manipulate said communication device in a first manner and a second command which is the command for the user to manipulate said communication device in a second manner are displayed by utilizing a first language data; wherein when said second language mode is selected by the user, said first command which is the command for the user to manipulate said communication device in said first manner and said second command which is the command for the user to manipulate said communication device in said second manner are displayed by utilizing a second language data; wherein when said communication device is powered off under said first language mode and powered on thereafter, said first command and said second command after said communication device is powered on are automatically displayed by utilizing said first language data; and wherein when said communication device is powered off under said second language mode and powered on thereafter, said first command and said second command after said communication device is powered on are automatically displayed by utilizing said second language data.