The document describes a proposed mobile file sharing system for opportunistic networks using Bluetooth technology. The system would allow mobile devices to download files from nearby devices and share their own files. It addresses challenges like system automation and efficiency of file sharing. The system has three main components - a connectivity mechanism for device discovery and connection establishment, download control to prioritize and speed up file transfers, and handling of connection breaks during transfers. The system was tested on smartphones and shown to achieve high data transfer rates, minimize costs of handling breaks, and maximize efficiency through techniques like limiting connection peers and using file pieces.