A device designed to augment the signal reception capabilities of cellular handsets by connecting to the phone and drawing in radio waves from a broader area than the phone’s internal antenna. These come in various forms, from simple clip-on units to more sophisticated, externally mounted directional devices. One example includes a magnetic mount antenna affixed to a vehicle’s roof to improve signal strength during mobile use.
The use of such supplementary signal receptors is predicated on enhancing communication reliability, particularly in areas with weak cellular coverage or where signal interference is prevalent. Historically, these were crucial for early mobile phone users who frequently encountered dead zones. The technology continues to offer advantages today, providing more stable connections for data transfer, voice calls, and improved GPS accuracy in challenging environments.