A method of providing a user interface on a mobile device for enabling a user to select acoustic equalizer settings for voice call downlink audio signals, the mobile device including an internal microprocessor, a display in communication with the microprocessor, and at least one input means in communication with the microprocessor, the method including receiving a request from the user for displaying the user interface, in response to the request, displaying the user interface on the display, the user interface including a plurality of predetermined acoustic equalizer settings, wherein the user selects one of the equalizer settings using the input means, receiving the selected equalizer setting at the microprocessor, storing the selected equalizer setting at the microprocessor, and processing the voice call downlink audio signals according to the selected equalizer setting.