The Xiaomi 14T Pro uses a 50MP main camera with optical anti-shake and auto-focus functions. The quality of the camera has undergone strict reliability inspection, and the phone has also undergone a comprehensive inspection when it leaves the factory. Due to the characteristics of the optical anti-shake focusing motor, the motor contains movable parts. When the camera is not turned on, the movable parts are in an unfixed state. When shaking the phone violently, the movable parts shake and slightly collide with other parts inside the OIS focusing motor, resulting in an abnormal sound. This phenomenon will not have any negative impact on the performance of the camera, please feel free to use it.