Mobile learning environments are human networks that afford the opportunity to participate in creative endeavors, social networking, organize/reorganize social contents, and manage social acts at anytime, anywhere through mobile technologies. Social acts that elicit identities, develop awareness, cement relationships, ensure connections, and promote interactions are necessary for interactive learning. This study was to understand mobile social presence and how it influences social interaction and relates to online and network social presences. It concluded that mobile social presence is similar to virtual social presence in a way; however, it is different from online and network social presences in the aspects of personalized control, and location-free digital interaction. Mobile social presence is defined as the degree of enriching social context-awareness, managing location-based communication, personalized multi-layered interactivity, and optimized digital and social identities to other intellectuals through digital mobile technologies. (Contains 2 tables and 2 figures.)