A method for executing a user function by an electronic device using voice recognition, the method comprising: displaying a user function execution screen; identifying, on the user function execution screen, executable functions selectable by voice input; detecting registered voice commands associated with the executable functions; characterised by: sensing a voice recognition start request during displaying the execution screen by determining whether a voice recognition execution request is received from a touch panel or a key input unit; and when the voice recognition execution request is not received, executing a function corresponding to an input signal; while a voice recognition execution request is continuously received from the touch panel or the key input unit, displaying the voice commands on the user function execution screen and recognizing a voice input by a user; and when the voice recognition execution request is no longer received from the touch panel or the key input unit, performing the steps of: i) removing the displayed voice commands from the execution screen and terminating voice recognition; ii) determining whether the recognized voice input is at least one of the displayed voice commands, and iii) executing the executable function associated with the input voice command, when the recognized voice input is at least one of the displayed voice commands. displaying a user function execution screen; identifying, on the user function execution screen, executable functions selectable by voice input; detecting registered voice commands associated with the executable functions; characterised by: sensing a voice recognition start request during displaying the execution screen by determining whether a voice recognition execution request is received from a touch panel or a key input unit; and when the voice recognition execution request is not received, executing a function corresponding to an input signal; while a voice recognition execution request is continuously received from the touch panel or the key input unit, displaying the voice commands on the user function execution screen and recognizing a voice input by a user; and when the voice recognition execution request is no longer received from the touch panel or the key input unit, performing the steps of: i) removing the displayed voice commands from the execution screen and terminating voice recognition; ii) determining whether the recognized voice input is at least one of the displayed voice commands, and iii) executing the executable function associated with the input voice command, when the recognized voice input is at least one of the displayed voice commands. sensing a voice recognition start request during displaying the execution screen by determining whether a voice recognition execution request is received from a touch panel or a key input unit; and when the voice recognition execution request is not received, executing a function corresponding to an input signal; while a voice recognition execution request is continuously received from the touch panel or the key input unit, displaying the voice commands on the user function execution screen and recognizing a voice input by a user; and when the voice recognition execution request is no longer received from the touch panel or the key input unit, performing the steps of: i) removing the displayed voice commands from the execution screen and terminating voice recognition; ii) determining whether the recognized voice input is at least one of the displayed voice commands, and iii) executing the executable function associated with the input voice command, when the recognized voice input is at least one of the displayed voice commands. i) removing the displayed voice commands from the execution screen and terminating voice recognition; ii) determining whether the recognized voice input is at least one of the displayed voice commands, and iii) executing the executable function associated with the input voice command, when the recognized voice input is at least one of the displayed voice commands.