Qualcomm Audio Calibration Tool -

Solution: Run adb shell ps | grep audio to verify the audio subsystem status. Restart ADB server using adb kill-server && adb start-server .

When you switch from a phone call to a video call (Zoom/Skype), the audio path changes. The modem no longer handles the audio; the application processor does. ACT allows engineers to define different calibration profiles for different "Use Cases": qualcomm audio calibration tool