A device designed to augment the audible output of a mobile communication device, particularly its alert signal. This can involve increasing the decibel level of the ringtone to ensure it is heard in environments with high ambient noise or by individuals with hearing impairments. An example would be a standalone unit that connects to a mobile phone and broadcasts the ringtone at a significantly higher volume.
These devices address the challenge of missed calls and notifications due to low ringer volume. They are beneficial in noisy workplaces, large homes, or for those with reduced auditory sensitivity. Historically, such enhancements were incorporated into landline phones, and similar principles have been adapted for mobile technology to improve accessibility and communication reliability.