Haptic feedback is the vibration you can feel on supported iPhone models after you perform some actions, such as when you touch and hold any icon on the Home Screen. Haptic feedback is a type of technology that gives you a tactile response when you interact with different elements of your iPhone. Apples Haptic Touch technology is similar to 3D Touch but it doesnt rely on pressure. Instead, Haptic Touch kicks in when a user long-presses the screen, offering a small vibration as acknowledgement following the press. Haptic feedback can be found in all sorts of places, including medical equipment, video games, and smartphones.
To customize haptic feedback on an iPhone, go to Settings > Sounds & Haptics. From there, you can set the volume for all sounds, change the sounds iPhone plays for certain people, and turn haptic feedback off or on. You can also customize haptic feedback by adjusting the intensity of the haptics and choosing whether to include a haptic vibration or not.