1. A communication device, which is a handheld 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 via said antenna; a video game implementer, wherein a video game object which is operable to be controlled by the user input is displayed; an auto time adjusting implementer, wherein the clock of said communication device is automatically adjusted by referring to a certain data received via said antenna; a moving picture displaying implementer, wherein a moving picture image is retrieved from said communication device and displayed; a calculating implementer, wherein a mathematical calculation is implemented on the user entered figures and the result of said mathematical calculation is displayed; a bold formatting implementer, wherein the user selected letter(s) is/are changed to bold; an italic formatting implementer, wherein the user selected letter(s) is/are changed to italic; a stereo audio output implementer, wherein stereo audio data stored in said communication device is processed to be output in a stereo fashion; a photo quality setting implementer, wherein a photo is stored in said communication device with the user identified quality; a multiple language implementer, wherein a list of multiple languages is displayed from which the user is operable to select a certain language, and the user interface of said communication device is displayed with the selected certain language; and 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.