Why can I see the video feed but cannot hear the sound? Please update your YI Home Camera app to the latest version. Check your phone settings to see whether your app is granted microphone permission. Related articles How do I save and watch my videos? What do I do if the voice of the video is low or with noise or howling? Where can I find the user manual? How do I set activity alerts? Why are the videos blurry or not clear? Comments 0 comments Please sign in to leave a comment.