3D Touch Multitasking


Mikey Campbell for AppleInsider:

To invoke 3D Touch multitasking on iPhone 6s, start an off-screen swipe from the left screen edge as you would a "back" gesture commonly used in apps like Safari and Mail. Make sure to press firmly on the screen while performing the left-to-right swipe action; this is how iOS 9 differentiates multitasking commands from the aforementioned back action.

I didn't know about this gesture. I find it a little tricky when using a phone case to get my finger into the edge of the display. With a little practice, I got the hang of it.

There are two gestures at work here. A swipe across a part of the screen and release activate the app switcher. If you go fully across the screen it quickly swaps to the last used app. This is an alternative to double tapping the home button and is pretty handy.