3D Touch

3D Touch has three settings for input sensitivity. This enables users to customize a preference of light, medium, or firm press on the iPhone's screen. 3D Touch gives a continuous pressure reading to software that is running on the phone. Force Touch on the other hand, gives only two layers of interaction: A normal click and a force click. Apple's haptic engine called the Taptic Engine resides in these devices, which houses a linear actuator producing vibratory effects as feedback. Apple enabled application developers to leverage the pressure sensitivity of trackpads and touchscreens into their own apps. 3D Touch was discontinued with the iPhone 11 and onwards.