The systems hacker's guide to the galaxy energy usage in a modern smartphone

Authors:
Aaron Carroll;Gernot Heiser
Affiliations:
NICTA and University of New South Wales;NICTA and University of New South Wales
Venue:
Proceedings of the 4th Asia-Pacific Workshop on Systems
Year:
2013

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Abstract

Modern smartphones are increasingly performant and feature-rich but remain highly power-constrained. Effective energy management demands an informed policy, and to that end we present a detailed power analysis of the Samsung Galaxy S III smartphone. We measure power consumption by instrumentation at the circuit level, and present a breakdown by the major components including CPU, RAM, display, GPU, wireless radios, camera, GPS and environmental sensors.