This is the most frequent issue. On EMUI 14, the microphone does not pick up the earpiece audio due to acoustic echo cancellation (AEC). Use a speakerphone, or better, use Cube ACR with the Helper app as described above.
Unlike third-party apps that may only record one side of the conversation via the loudspeaker, this method integrates directly with the system dialer for high-quality, two-way recording. Call Recorder Emui 14
:Users often download and install a stock Huawei Call Recorder APK (ripped from firmware where the feature is legal). Once installed and the device is restarted, an "Auto-record calls" toggle usually appears in the Phone app's settings (four dots in the top right > Settings). This is the most frequent issue