Why do the power and volume buttons on the Xiaomi 15 wobble or occasionally make a crisp sound?

The Xiaomi 15 has undergone rigorous professional inspection to ensure optimal button feel and long-term durability. To prevent potential malfunctions caused by jamming, a small, precisely calculated gap is intentionally designed between the power and volume buttons and the phone body. This allows for smooth button operation and enhances overall reliability.
Due to this structural design, you can notice slight movement or occasional crisp sounds when pressing the buttons or shaking the device. This is a normal phenomenon and does not affect the functionality or longevity of the buttons. Rest assured that the Xiaomi 15 maintains high standards of quality, and this design choice is made to provide a balance between tactile feedback and durability. Thank you for your understanding and continued support.