Besides the new camera system of the iPhone 6S (12MP camera and 5MP iSight camera front) has no ifs and buts 3D Touch one of the highlights of the new generation iPhone. Phil Schiller devoted to this topic during the Apple keynote and demonstrated extensively the possibilities of new technology. 3D Touch is a little way with Force Touch at Apple Watch or the new MacBooks comparable, however, provides an extra dimension and new features.
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3D touch keyboard makes the trackpad
3D Touch gets more out of the iPhone 6S. So there with Quick Actions e.g. quick access to frequently used functions or preview a Web page when you click on a link. However, 3D Touch lets the keyboard of the iPhone 6S'll also for trackpad.
