Sony DSX-B710D - The Sound Cannot be Output During Playback in Android Mode

Help Guide
In-Car Receiver
DSX-B700/DSX-B700W/DSX-B710D
The sound cannot be output during playback in Android mode.
While the unit is in Android mode, the sound outputs only from the Android smartphone.
Check the status of the audio playback application on the Android smartphone.
Playback may not perform properly depending on the Android smartphone.
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