I have just checked the Moto G4 (Moto G 4th) Android 6.0.1 ROM from USA, Motorola disabled the call recording feature by a very strict way, even if Boldbeast Recorder can't bypass the limit without root. If you don't root the phone you can only record noise or recordings are silent.
Boldbeast Recorder is far more powerful than all other recorders in the market about "fix recording problems without root", now that Boldbeast Recorder doesn't work all recorders surely don't work either. You can test other popular recorders in the market and confirm what I said.
Rooting your phone is the only way to go.
After root the phone Boldbeast Recorder can fix the problem, please use these settings to record calls:
- Record Mode: 1
- Tune Audio Effect: No
- Tune Audio Route: Group3
- Change Audio Controls: Yes
- Change Audio Driver: No
- Start Input Stream: test Yes and No
Updated 2016-05-30
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Unlike "Moto G4 Android 6.0 in USA", it seems the call recording feature of "Moto G4 Android 6.0 in some countries" is not disabled by Motorola. In this case please use these settings to record calls:
- Record Mode: 1
- Tune Audio Effect: No
- Tune Audio Route: Group3
Updated 2017-01-02
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I have just checked the Moto G4 Android 7.0 ROM, Motorola still disabled the call recording feature, you should root the phone to fix the recording problem.