Mobile electronics use power. And as the software becomes more complex, they use more and more of it. At Google I/O 2015, the company has announced an improvement on the ultra low-power mode found in Lollipop. They're calling it "Doze," for obvious reasons, and it will debut in the M release of Android scheduled to go into a developer preview soon. It should debut in public builds later this year.

Specifics on the improvements made to the low-power mode are scarce, but apparently they are extensive enough for some dramatic power savings. According to the I/O presenter, a Nexus 9 equipped with an Android M developer preview build saw nearly two times the battery life in low power mode versus the same hardware running Android Lollipop.
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