Energy modeling and optimization are very important parts of mobile and wireless application development. Recent studies suggest that the battery life of a smartphone has become a critical factor in user satisfaction. Typical mobile applications today consume much more energy than is strictly necessary because of the suboptimal use of the smartphone's hardware by the software.

This book provides guidelines for smartphone users, methodologies for researchers, and in-depth knowledge of smartphone power management for the public at large. The techniques presented in the book are necessary for developing energy-aware and energy-efficient systems and applications. The book provides the necessary theoretical background and results from the field, and also practical guidance on assessing and optimizing energy efficiency.

In this book we study the following two questions: What is the power consumption of smartphones and applications, and what are the potential solutions for optimizing smartphone power consumption?

Mobile device power management is facing new challenges posed by the revolutionary development of mobile networks, devices, and applications. Smartphones are complex systems, and it is hard to anticipate user behavior and the way the operating system (OS) and applications use the underlying hardware resources. Thus, advanced techniques are needed, first to understand the power-consumption behavior, and then to optimize the hardware/software design to improve energy efficiency.