This document discusses peer-to-peer (P2P) file sharing over GPRS networks on mobile phones. It describes how P2P networks allow for direct sharing between users without a central server. The document outlines existing P2P platforms and applications for mobile devices, as well as the benefits of P2P sharing like increased network usage and cheaper costs compared to client-server models. Key challenges with mobile P2P include technical limitations of devices and supporting various network access types. The document proposes a P2P application for Java-enabled phones using a client-server architecture over GPRS networks.