A volume control feature is needed for both the navigation and music apps.

dohyun

I’m using OS version 3.6 and using Tmap, a navigation app in Korea, along with YouTube Music.
The problem is that the volume of YouTube Music is much louder than the navigation voice.
Even when I try adjusting the sound balance settings, it doesn’t seem to have any effect.

DUDU-Meng

Tmap seems to be a navigation app for mobile phones. They probably designed the sound for this app to be very low, so you'll have to wait for DUDUOS 3.7, which may add independent channel adjustment functionality.

dohyun

DUDU-Meng 감사합니다^^