The highlight feature of the iPhone 6s and 6s Plus is something called "3D Touch" — a way of interacting with the phone by pressing harder on the screen than you regularly would. This is not to be confused with "Force Touch," which is exactly the same thing but on the Apple Watch instead.(One of our readers pointed out that there is a slight difference: 3D Touch has a few more levels of pressure sensitivity than Force Touch.) Shakespeare would probably have told you that a feature by any other name would be as gimmicky, but I digress.
Users can now long press on an image thumbnail to zoom in on it. Dragging their finger away from the center of the image shrinks it back down to thumbnail size, and moving over one of the buttons under the picture lets them like or share it without ever having to lift their finger. There's even a pleasant haptic feedback given when hovering over one of the buttons.
The new feature is enabled on version 7.13.1 of the app, which you can download from Play Store
Source :- Android Polic