Methods, systems and apparatuses for adaptively controlling a tradeoff between computational accuracy and power consumption of a mobile device are disclosed. One method includes receiving a set of predetermined tasks of a subject or a device associated with the mobile device, selectively activating a plurality sensors of the mobile device based on the set of predetermined tasks, estimating, by one or more sensors of the selectively activated plurality of sensors of the mobile device, a location of the mobile device, sensing, by the plurality of selectively activated sensors, sensed information of the mobile device, and selecting a condition of the subject or the device based on the estimated location, the set of predetermined tasks, and the sensed information of the plurality of selectively activated sensors.