The battery in the Samsung Galaxy S4 may pack 500 more milliamps per hour than the old S3 battery, but that doesn't necessarily mean more battery life. High-powered devices need lots of juice, and the S4 is definitely more powerful than its predecessor. The new battery can handle a third more in standby days, and over twice as much in talk time hours. But, when you live on your phone all day long, that means nothing. You're battery is still going to have a hard time keeping up with you.
However, like any mobile device, there are things you can do to prevent battery drain. Use the tips below... more