Carl, I included the firmware version with the post so it shows the camera has the latest version so there's no reason to suggest updating it. The issue is specifically with the Android app, and the phone"s volume has nothing to do with the mic sending audio to the camera.

The iPhone app works properly and my voice can be heard clearly without having to nearly swallow the phone"s mic like i have to do with the app on my Android phone. The issue isn't the wifi band or the firmware version or needing to remove and re-add the camera. The Android app is clearly the issue and needs to be fixed.

Except it's not my phone either. This happens with both a Samsung S10+ and a Note 9. There was a single time where the audio worked at normal levels but running the app at a later time resulted in the audio being too quiet once again. If the issue was a "hardware issue" then my phone wouldn't work with normal phone calls and other uses of its mic and that's just not the case. PLUS we've also tried a Tuya based camera that uses the Smart Life app which functions much the same way as the Kasa app and that works just fine with the phones' mics AND works with bluetooth headphones. The idea that two different phones would be suffering from a supposed hardware issue causing problems sending audio to the Kasa camera while another app for a different camera is  absurd on its face.

Same issue with mine. Audio is very, very quiet. This happened on my S7 and my wife's S7.We then switched to S9 and S9+ later in the year and same issue! Lastly, we just ordered a second cam for upstairs and that one is just as quiet. There is no way that Kasa isn't aware of this issue. This needs to be addressed. Firmware has latest update. Checked everything I can think of....

So Carl. Stop trying to blame the end user and fix your software.

@Carl 

Same issue here. Using a Samsung Galaxy S10 and speaking at normal volume with the mobile device a few inches from my mouth results in basically no audio output from the camera. I literally need to cup one hand around my phones mic and and speak at an almost shouting level for even a quiet audio output from the camera.

My wife's iPhone 7 works just fine.

ISSUE IS CLEARLY WITH THE ANDROID APP. FIX THIS OR I WILL BE RETURNING MY CAMERAS!!

@Carl 

Thanks for your reply. I can agree with your observation that the issue seems to be isolated with Samsung devices. However I disagree that it is a hardware issue, as the microphone works fine with all other apps that use it. So it is probably not fair to say the issue is clearly with the android app, generally. But specifically, the way the android app behaves on Samsung devices seems to be an issue.

I'm surprised to hear you don't have any Samsung devices locally to test, as Samsung is the most dominant Android device manufacturer worldwide. It would be much appreciated if your design team could obtain a current model Samsung smartphone to perform testing, and keep us updated. 

Thanks.

I also have a Samsung phone and two cameras and the audio is barely audible.  Samsung is the biggest smartphone brand it seems unbelievable that the app wasn't tested on a Samsung device.  That being said, I made the purchase specifically to be able to speak to my dog while I'm at work, this needs to be fixed ASAP.