Thanks BoldBeast,
I did some more fiddling around with the setting.
If I "disable" tune audio route - my voice is crystal clear - there is no drop in volume nor distortion, meaning noise cancellation is not even applied. However, the other caller it is silent.
For Group 3, it seems that my calls are recorded, and the other side I can hear perfectly. However, after 10 seconds, my voice drops off.
What exactly is being disabled in the tune audio route to make my voice clear. And if that can be applied to Group 3 - then that may be the key to solving this issue.
Appreciate the help.
Is there a way to mimic this recording route through the call setting app?
=> If you use the back microphone route you can only record your own voice, the caller's voice can't be recorded.I researched further and there is the ability to leverage camcorder mediarecorder. Is there a record mode for this one.
=> Record Mode 11 is it.