So i notice my battery dies WAY to fast on this phone. My friend told me to download an application killer so i did. I press it they close out. But then slowly 1 by 1 they all start to re-open. Why are applications running in the back round that i didn't click on? And how can i stop them all from launching. It's rather annoying having my battery die quick because somethings on that i didn't turn on. Please someone tell me how to fix this problem?