An apparatus for providing an etiquette call mode of a mobile device , the apparatus comprising: a radio frequency, "RF", unit configured to transmit a sending call and to receive a received call in a call mode; an audio processing unit ; a control unit configured to control operation of the RF unit and the audio processing unit to activate the etiquette call mode in which reception gain for the received call is automatically set to a minimum gain value and transmission gain for the sending call is automatically set to a maximum gain value; wherein, when the etiquette call mode is activated, the audio processing unit is controlled to: establish the transmission gain to a given gain value, the given gain value being a maximum gain value of a first amplifier , establish the reception gain to a specific gain value corresponding to a minimum receiving volume level, and amplify the received call received by the RF unit by means of the established reception gain, characterized in that the audio processing unit is further configured to compare a signal level of the amplified received call to a predetermined maximum signal level and a predetermined minimum signal level of a predetermined reference level range, and in response to determining that the signal level of the amplified received call is greater than the predetermined maximum signal level or less than the predetermined minimum signal level, reduce the signal level of the amplified received call to be less than or equal to the predetermined maximum signal level or increase the signal level of the amplified received call to be greater than or equal to the predetermined minimum signal level wherein an output level of the amplified received call is within the predetermined reference level range. a radio frequency, "RF", unit configured to transmit a sending call and to receive a received call in a call mode; an audio processing unit ; a control unit configured to control operation of the RF unit and the audio processing unit to activate the etiquette call mode in which reception gain for the received call is automatically set to a minimum gain value and transmission gain for the sending call is automatically set to a maximum gain value; wherein, when the etiquette call mode is activated, the audio processing unit is controlled to: establish the transmission gain to a given gain value, the given gain value being a maximum gain value of a first amplifier , establish the reception gain to a specific gain value corresponding to a minimum receiving volume level, and amplify the received call received by the RF unit by means of the established reception gain, establish the transmission gain to a given gain value, the given gain value being a maximum gain value of a first amplifier , establish the reception gain to a specific gain value corresponding to a minimum receiving volume level, and amplify the received call received by the RF unit by means of the established reception gain, characterized in that the audio processing unit is further configured to compare a signal level of the amplified received call to a predetermined maximum signal level and a predetermined minimum signal level of a predetermined reference level range, and in response to determining that the signal level of the amplified received call is greater than the predetermined maximum signal level or less than the predetermined minimum signal level, reduce the signal level of the amplified received call to be less than or equal to the predetermined maximum signal level or increase the signal level of the amplified received call to be greater than or equal to the predetermined minimum signal level wherein an output level of the amplified received call is within the predetermined reference level range. <EOS>