This document discusses how mobile apps can foster social presence in online classrooms. It notes that there are now over 5 billion cell phones and 1 billion internet-capable mobile devices in the world. While early research focused on traditional online environments, little research has examined the impact of increased mobile technology use. The document argues that mobile technology allows for greater communication and connectivity between online learners than previous generations experienced. It maintains that mobile apps have the potential to enhance students' social presence in online courses if carefully integrated and administered.