1

No root needed, Galaxy S4 GT-I9500 records calls perfectly in two sides.
Please use these settings to record calls:

- Record Mode: 4
- Tune Samsung1: Yes
- Tune Samsung2: Yes
- Tune Samsung3: No
- Tune Audio Route: Group3

2

Galaxy S4: Galaxy S4 Call Recorder
Galaxy S4 GT-I9500: Galaxy S4 GT-I9500 Call Recorder
Galaxy S4 GT-I9505: Galaxy S4 GT-I9505 Call Recorder
Galaxy S4 SCH-I545: Galaxy S4 SCH-I545 Call Recorder
Galaxy S4 SGH-I337: Galaxy S4 SGH-I337 Call Recorder
Galaxy S4 SGH-M919: Galaxy S4 SGH-M919 Call Recorder
Galaxy S4 SPH-L720: Galaxy S4 SPH-L720 Call Recorder
Galaxy S4 CM11: Galaxy S4 CM11 Call Recorder
Galaxy S4 CM12: Galaxy S4 CM12 Call Recorder