If the Xiaomi Smart Camera C302 produces noise when using the voice call, please refer to the following troubleshooting methods:
1. Keep your phone away from the camera and avoid placing it near electronic devices such as refrigerators, air conditioners, and microwave ovens, as these can generate electromagnetic interference and cause noise.
2. Dust or debris blocking the microphone module opening can cause unclear audio reception and produce noise. Gently wipe the microphone opening with a soft cloth to ensure there are no obstructions.
3. If noise is heard from the camera, the camera’s speaker or the phone’s microphone is faulty. If noise is heard from the phone, the phone’s speaker or the camera’s microphone is faulty.
4. Ensure the camera is connected to a stable network to minimize channel interference. During a voice call, disable bandwidth-intensive applications (such as downloads and HD video playback) on other devices to prevent network congestion that can cause voice data transmission delays and distortion, thereby reducing noise.
5. If the monitoring environment is too noisy (such as in a factory workshop or on the side of the road), the device will pick up excessive ambient sound, causing noise.
6. Power off the device and turn it on again. Restarting the device can clear temporary software glitches.
7. If none of the above steps resolve the issue, please contact the local official after-sales center for further assistance.