We suggest a step-by-step approach as a turning process
to optimize software energy-efficiency on Android platform
for wide range of usage scenarios. This turning approach
does not involve end users so they will not bother when and
how to turn the devices off and on for battery lifetime. In
addition, the usage scenarios selected in the process are
widely covering end user’s daily activities, and could be any
of or all from streaming media playback, browsing,
messaging, and game.