After the latest firmware (WW-31.1010.0411.89) , I noticed the volume of the left speaker on my headphone is noticeable lower (around 50%) than the right side. Anyone is experiencing the same?
I also cannot find the audio balance adjustment option in Settings -> Accessibility which is present in other Android devices. So I have no way to manually adjust it.
EDIT: sorry, it turns out that my other headphone works fine, so it's just coincidence that it happens right after the firmware update 😛
But my question regarding the lack of audio balance adjustment remains valid.