The iPhone is a great device for performing a wide variety of functions, like sending email, watching a movie, getting directions to a destination, playing games, surfing the internet, or of course, making a phone call. One thing that hampers the iPhone’s ability to be a worry-free productivity device is its the battery life. It can vary widely depending on how you use your iPhone. So here are few Tips that will definately increase your battery life in your iPhone (They are also applicable to your iPod. Not tested on iPad but you may try it).