Why does the camera module make a sound when the POCO X7 Pro is shaken?

We are very sorry for causing some trouble in the use of your product.
The POCO X7 Pro uses a 50 million pixel main camera with optical image stabilization and autofocus functions. The camera quality has undergone rigorous reliability testing, and the phone has also undergone a comprehensive inspection before leaving the factory. Due to the characteristics of the optical image stabilization focus motor, there are movable parts inside the motor. When the camera is not turned on, the movable parts are in an unfixed state. When the phone is shaken vigorously, the movable parts shake and slightly collide with other parts inside the OIS focus motor, causing an abnormal sound. This phenomenon will not have any negative impact on the performance of the camera, so please feel free to use it.