| 摘要 |
<p>According to the present invention, a mobile device automatically sets the volume of an external sound output device by the use of functions or by users, and more specifically, a mobile device comprising an interfacing tool connected to the external sound output device; a memory which stores at least one identification tool of the external sound output device and volume information by function; and a control part and a display part wherein the control part is allowed to display a graphic user interface on the display part to set the volume by function of the connected external sound output device without storing the identification tool of the external sound output device connected to the memory.</p> |
