I have a Nokia Lumia 900 with Windows Phone 7.5. I know that keeping the back button pressed and holding it shows the multiple tasks open, and pressing the 'back' button repeatedly 'closes' these tasks.
I wanted to know if simply pressing the 'home' button is enough to close these multiple tasks. Or is it necessary to close them by repeatedly pressing the back button? Also does simply pressing 'home' and leaving say 5 tasks open consume the battery quicker?