for iOS 9.1 software

Multi-Touch screen
A few simple gestures—tap, drag, swipe, and pinch—are all you need to
use iPhone and its apps.
3D Touch
With the iPhone 6s and iPhone 6s Plus, you can use 3D Touch to see
previews, find useful shortcuts, and more.
For example, in Mail, press a message in the mailbox list for a peek at
the message contents, then slide up to see a list of actions. Or press a
little deeper to pop the message open. In Photos, press to peek at an
image; then swipe up to share or copy it, or press a little deeper to pop
the image to full screen.