If your voice is good but the voice of your friend is weak or silent in recordings, you should
- Switch on the loudspeaker during a call, so Boldbeast can record the call on both sides normally. Or
- Root the phone, so Boldbeast can fix it completely to record calls on both sides perfectly without switching on the loudspeaker.
About root please have a look at this link:
If you root the phone, on Boldbeast Recorder please set "Record Mode" to Alsa2 Mode, then it works at once.
The Alsa2 Mode works great. So far there is no user who said it doesn't work. I believe it works well on all phones running Android 10 and newer versions.