I was just looking for a few tips on data usage. When I am on a app on my network how do you know that the app isn't using data all the time? Does it automatically stop using data when you go back to your home screen?
Unfortunately the multitask feature cannot be toggled on and off so if you have an app that uses data running in the background such as maps, you will be using data. However, if you have a jailbroken phone, you can download a tweak to disable the multitasking feature