Audio Stops Recording After a Minute

I am trying to do WebRTC, all is working fine but there seems to be an issue, that is, if the screen remains off for more than a minute the audio stops recording, meaning the audio from device stops until I switch the screen on once again.

What I have tried?

1) I have tried setting webSettings.setMediaPlaybackRequiresUserGesture(false); it does no good to the problem.

2) I have also tried adding a wakelock in the activity in which I am doing WebRTC but it also didn't work.

Here are the permissions declared in Manifest:

<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />

Here in activity, I am granting permission for the microphone in WebChromeClient:

        @Override
        public void onPermissionRequest(final PermissionRequest request) {
            request.grant(request.getResources());
      }

What I want?

I want to be able to continue call without disrupting the user to turn screen back on again. Please point me in right direction.

Thanks!

Update: I tried loading the WebRTC url in Chrome and the same thing is happening, that is, audio stops recording from my device.

Update 2: Adding log when audio stops coming from the device.

2019-08-06 17:18:47.266 4332-22405/? V/APM_AudioPolicyManager: getAudioPolicyConfig: audioParam;outDevice
2019-08-06 17:18:47.266 4332-22405/? V/APM_AudioPolicyManager: getNewOutputDevice() selected device 2
2019-08-06 17:18:47.266 4332-22405/? V/APM_AudioPolicyManager: ### curdevice : 2
2019-08-06 17:18:47.307 4332-22405/? V/APM_AudioPolicyManager: AudioPolicyManager:setRecordSilenced(uid:99066, silenced:1)
2019-08-06 17:18:47.308 4332-22405/? V/APM_AudioPolicyManager: AudioPolicyManager:setRecordSilenced(uid:11556, silenced:1)

from Audio Stops Recording After a Minute