Unrealized tactile volume and power buttons: The regret of iPhone 15 Pro

News on September 21, Apple has brought an eye-catching technological innovation in its latest iPhone 15 Pro series. They redesigned the volume and power buttons and introduced tactile button technology called "Bongo". This technology is the result of Apple's internal project Bongo, which aims to provide more advanced button interaction methods and a better user experience

Traditional mechanical buttons are a thing of the past, iPhone 15 The Pro series' volume and power buttons now feature tactile button technology. It is reported that this technology measures the pressure exerted on the button by bending the sensor, converts it into a change in resistance, and sends a signal to the main logic board to indicate that the button is pressed. The Bongo haptic engine then relies on vibrations generated by electromagnetic fields to simulate the feeling of pressing a physical button and deliver subtle tactile feedback to the fingers. This method not only provides more subtle button feedback, but also significantly improves the response speed of the buttons, resulting in a smoother operating experience.

In order to promote the success of the Bongo project, Apple developed the Bongo haptic engine driven by a reluctance motor. This electromagnetic-driven reluctance motor is widely used in the field of microelectronics and has the characteristics of faster vibration speed and shorter response time. This means that users can feel the feedback of button operations more quickly, whether adjusting the volume or turning the power on and off, and can be more comfortable

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