Why doesn't the Xiaomi Smart Camera C200 capture sound or have noise when watching real-time monitoring?

For your reference, here are some solutions to this issue:
1. The Mi Home/Xiaomi Home APP turns off the volume of real-time video by default. You can turn on the volume by tapping the mute icon on the real-time monitoring interface. If the volume is low, adjust it higher on your phone;
2. If there is noise in the real-time video, please keep your phone away from the camera and avoid placing the camera near refrigerators, microwave ovens, or other electronic devices;
3. Check whether the camera’s microphone is blocked by the casing;
4. If the camera is placed in a high position or the lens is facing downward, it causes the microphone to be buried and pick up echoes from surrounding surfaces. In this case, the device's microphone should be removed from the cavity.