1

Please share settings

2

Xiaomi Redmi Note 4, please use these settings to record calls:

- Record Mode: 1
- Record Format: MP3
- Tune Audio Effect: No
- Tune Audio Route: Group3

It records calls crystal clear in two sides, so far confirmed by Android 6.0, 6.0.1, 7.0 ROMs.

3

All Xiaomi has inbuilt call recorder so is there a need to install external call recording app?

4

It's possible the manufacturer doesn't provide the call recording feature out of the box in some countries or areas.