Systems and methods for managing activities among collocated mobile devices include means for determining a set of tasks to be performed collectively by the two or more collocated mobile devices while collocated and during a period of time in the future, the two or more collocated devices being configured to communicate with one another; means for assigning a first task of the set of tasks to be performed by a first mobile device of the two or more collocated mobile devices; and means for assigning a second task of the set of tasks to be performed by a second mobile device of the two or more collocated mobile devices; wherein the first mobile device and the second mobile device are different from one another with regard to at least one subsystem, and are each capable of performing the first task and the second task.