An apparatus and method are provided to output a received call with a volume adjusted to a reference level range in the etiquette call mode. In the method for providing the etiquette call mode of a mobile device, the apparatus determines whether the etiquette call mode is activated in a call mode. When the etiquette call mode is activated, the apparatus establishes a transmission gain to a given gain value and also establishes a reception gain to a specific gain value corresponding to a minimum receiving volume level. Then the apparatus amplifies a received call by means of the established reception gain, adjusts a volume of the amplified received call to a given reference level range, and outputs the adjusted received call through a speaker.