1

No root needed, just install Boldbeast Recorder and go, HTC Desire 820 dual sim can record calls perfectly in two sides.

Android 4.x please use these settings to record calls:
- Record Mode: 4
- Tune Audio Effect: No
- Tune Audio Route: Group3

Android 5.0 up please use these settings to record calls:
- Record Mode: 1 or 5
- Tune Audio Effect: No
- Tune Audio Route: Group3

2

All incoming calls and outgoing calls from both SIM1 and SIM2 are recorded perfectly. Please install the latest version of Boldbeast Recorder.

3

Some HTC phones meet this problem: HTC Android 6.0 sometimes doesn't record calls

HTC Desire 826: HTC Desire 826 Call Recorder
HTC Desire 820: HTC Desire 820 Call Recorder
HTC Desire 816: HTC Desire 816 Call Recorder
HTC Desire 700: HTC Desire 700 Call Recorder
HTC Desire 626: HTC Desire 626 Call Recorder
HTC Desire 610: HTC Desire 610 Call Recorder
HTC Desire 530: HTC Desire 530 Call Recorder
HTC Desire 516: HTC Desire 516 Call Recorder

4

boldbeast wrote:

All incoming calls and outgoing calls from both SIM1 and SIM2 are recorded perfectly. Please install the latest version of Boldbeast Recorder.

5

boldbeast wrote:

No root needed, just install Boldbeast Recorder and go, HTC Desire 820 dual sim can record calls perfectly in two sides.

Android 4.x please use these settings to record calls:
- Record Mode: 4
- Tune Audio Effect: No
- Tune Audio Route: Group3

Android 5.0 up please use these settings to record calls:
- Record Mode: 1 or 5
- Tune Audio Effect: No
- Tune Audio Route: Group3