This study understands communication as parasitic and symbiogenetic. It recognizes an object or technology no less and no more important than a subject, and appreciates the “process” of the “becoming” of both a subject and an object. Media and individuals create and recreate each other. In the symbiogenetic space in-between, what happens is not a physical addition of a technological object to an individual, but, rather, it is a chemical fusion of the two, which holds unprecedented, distinctive qualities that have not been seen from any of the two constituents. Among various communication media, this study examines why and how the mobile phone is particularly parasitic and symbiogenetic.