Huawei Mate 20 Call Recorder

Huawei Mate 20 / Mate 20 Pro Android 9.0 need root, otherwise you can only record your own voice, the caller's voice is very weak in recordings, no matter what recorder you are using in the market. Boldbeast Recorder can fix the problem if you root the phone.

After root the phone please use following settings to record calls:

- Record Mode: Alsa
- Alsa Device: Auto
- Alsa Bits: Auto, 16 Bits
- Alsa Channels: Auto
- Alsa Sampling Rate: Auto
- Fix Recording Issues - Change Audio Controls: No
- Fix Recording Issues - Change Audio Driver: No

Update 2018-11-26
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Great news! Thanks to Kuldeep Clair, he figured out following settings in Boldbeast Recorder works well:

- Record Mode: 12
- Fix Recording Issues - Tune Audio Route: Group1

Recorded calls are clear in both sides, no root needed.

Update 2018-11-27
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Some users confirmed settings suggested by Kuldeep Clair above work great without root. However some users reported their phones still don't work well with the settings.

The manufacturer enables or disables features according to market areas, therefore the ROM is a little different from country to country, from area to area. This is the reason why in some countries the settings work great, in some countries they don't work. If they don't work, you should root the phone and use the Alsa settings above.

Android 10
https://www.boldbeast.com/forum/topic20 … rding.html

Any ETA when non-rooted variant could be available? Or is it a limitation of Android 9.0? At the moment there is AFAIK no known public solution how to root the device.

mate 20 pro is not rooted i tried the settings - my voice records perfect - opposite party voice is very weak - any other tweaks needed?

Mate 20 Pro. Record mode 1. No root.  Android Pie. Records both ways. The other party is somewhat quiter but it is very usable. When I find time I will check other modes.
However, I have another problem. Boldbeast tend to shut down after few hours of use.  I have excluded Boldbeast recorder in battery optimization (worked perfectly with Mate 9 and Android 8).  Since I use it in the car, it is quit annoying (and dangerous) having to check weather the app is active or not.

Yes, I am aware of that. However I did exclude battery optimization for BR and still after few hours (I can not tell precisely) it shuts down. Or to be more accurate Mate 20 shuts it down. I could be that I have to tweak it at some other place but I do not know where.

There is no lock option in recent apps, on my phone. I have tried to lock it through settings/security&privacy/applock and although it did lock the app it didn't help.
Now I am contemplating rooting my phone. Would rooting the phone and using options for rooted phone return names and phones in call list?

I have managed to get it all working! I am posting all I have done for others to try.

1.  Download the Boldbeast Recorder from the Boldbeast page and install it. You get the phone numbers back.
2.  Settings-Battery-App launch-Boldbeast recorder/ change to: manage manually (make sure that all three options are on)

The app is working and Huawei is not killing the process.

Loudspeaker: ON = Recordings: PERFECT ;-)

I am sorry to say but  after the latest Emui update the recorder stopped working properly. As everyone is saying the other party is very, very weak. Contemplating rooting now.