How can a mobile phone video call have an echo of its own speech?

1. Maybe the local network signal is not good. Change a WeChat contact to make a video call, or switch the network connected to the mobile phone.

2. Go to Settings-More Settings-Apply-All-Find WeChat to clear the data, or uninstall WeChat to download and install again.

3. Restart the phone and go to Settings-More Settings-System Update-Download and install the latest system version.

4. Many people like to cancel the "Mute" option in the "Microphone" column of the volume control panel and turn the microphone volume to the maximum before using the microphone for video chat.

5. Control whether the speakers and headphones feed back the sound of the microphone. It is suggested that you choose the "mute" option when using the microphone, which can eliminate the noise and echo in the earphone and make the voice effect better.