Samsung Galaxy A9 doesn't need root, Boldbeast Recorder records calls perfectly in two sides.
Android 5.1.1 Please use these settings to record calls:
- Record Mode: 4
- Tune Audio Effect: No
- Tune Audio Route: Group3
- Tune Samsung1: Yes
- Tune Samsung2: Yes
- Tune Samsung3: Group1
Android 6.0.1 please use these settings to record calls:
- Record Mode: 1
- Tune Audio Effect: No
- Tune Audio Route: Group3
- Tune Samsung1: No
- Tune Samsung2: No
- Tune Samsung3: No