Giving this app a shot from the Play Store: Snapdragon BatteryGuru EDITED: My apologies, the app is not currently compatible with the Xiaomi Mi-2, but the developer has said there are future plans to do so. I will update, once it is available. UPDATE: The apk is available here, post #7. (Thanks to derbestimmer & grondinm) Also, you might want to consider Greenify from the Play Store, which apparently ALSO optimizes battery. Description Snapdragon™ BatteryGuru extends battery performance and improves overall user experience by intelligently making changes that optimize Snapdragon device functionality. This app: • Delivers longer battery life with fewer charges • Intelligently learns how you use your Snapdragon smartphone and optimizes your device without disabling smartphone functionality • Requires no user configuration - Snapdragon BatteryGuru automatically learns and adjusts the smartphone settings so you don’t have to. After a brief 2-4 day introduction period, Snapdragon BatteryGuru learns the user’s behaviors and then notifies the user that it is ready to extend the battery life and improve the experience. Snapdragon BatteryGuru continues to operate in the background, deepening its understanding of the user and further optimizing the experience over time.