Hi, I'm worried about the running apps and the battery life of my iPhone. I installed SmartSync and Facebook app today and how do I know if these apps are running in the background ? Specially the facebook notified about push messages. How to see if there are any apps with running services are installed? (I prefer apps that starts, runs and exists and free up the memory after execution. I want to avoid any apps that leaves itself or a portion of it running behind) Thanks.