been entered during a call in the mobile communications terminal a voice recognition function is activated when the voice recognition button is entered in the activated state of the voice recognition function the voice recognition function is deactivated that is by pressing the voice recognition button the mobile communications terminal controls the conversion into the activation and deactivation of the voice recognition function so as to initiate or stop the voice recognition in order for the user to enter the voice recognition button while he is calling without stopping the call the voice recognition button is arranged in a function button to make it convenient to use the voice recognition button during the call in addition the voice recognition button may be represented by displaying a hot logo on the voice recognition button and the user confirms the position of the voice recognition button by the hot logo displayed on the keypad in another embodiment the voice recognition button may not be arranged on the keypad 10 of the mobile communications terminal but a voice recognition soft button may rather be displayed at a lower end of a call screen to activate deactivate the voice recognition function by operating the soft button when a call connection is successfully performed between.