Day by day, the technology development for smart phones is enormously increasing. Smart phones have so many applications in daily life. Its used for phone calls, social networking, gaming, listening to music, watching movies, net browsing, blogging etc., Due to its multi tasking capability, the dependency on phone has now become a compulsion. For having an uninterrupted usage, battery life plays a very important role. A lot of potential smart phones fail on the battery section. Atleast a day’s usage from full charge is expected by an average user. Though we cannot boost the battery performance, we can definitely control the consumption rate.Lets discuss what we can do to improve the battery life.