If someone had the same problem with recorded conversations as I did, i.e. use the NM card on Android 10 then I prepared a simple application. Used to listen to recorded calls that cannot be seen normally on the recorder.
Supports light and dark theme. There are many languages (Polish, Czech, Russian, Ukrainian, German, French, Spanish, English, Turkish). It allows you to play back recordings, send as a file.
It supports file location on the NM card and in the internal memory, so it can be used interchangeably with the recorder. Supports all files from CallRecord folders with internal memory and NM card. On Android 10, it defaults to a dark or light theme, depending on your system settings. In addition, it includes a light and dark mode switch.
Note, the application does not contain ads and is free.
The only permission is access to the file system. No data is collected and processed.
For EMUI 10.0 and 10.1, you first need to delete the old version of call recording (application names: version for EMUI 9.1 - "Recorder" (do not accidentally delete the built-in voice recorder. Call recorder has an icon in the form of a green robot), and versions for EMUI 10.0 and 10.1 - " Conversation recording ")! After installing the application, it is recommended to restart your smartphone.
Displaying records in a contact and a dictaphone: Access to the memory must be provided to the "Contacts", "Dictaphone" and "Call Recorder" applications (for EMUI 9.1 "Recorder"). We go settings -> applications -> rights manager -> memory: we are looking for the desired application, go in and set "Allow". In some cases, other actions helped: you must first remove the access, restart the phone and grant access again.
Enabling (disabling) automatic call recording: You need to go to the "Phone" application (popularly a dialer) -> three dots (in the upper right corner) -> settings -> Automatic call recording.
It's really convenient when use your phone as a work phone. If a customer with a lot of requirements calls you, it's much easier to have the phone call as a voice memo than to rush to write on a piece of paper and possibly miss something.