@KrishneshG Please do not flood the Forum with bug reports or feature requests, they will get lost here. If you feel something is ready enough to be a bug ofr feature, please bring it up on the main issue trackers for Apps and Ubuntu Touch in general. Apps are partially on Gitlab: https://gitlab.com/ubports/apps, the main tracker for UT is here: http://github.com/ubports/ubuntu-touch and you can also search through our repos at http://github.com/ubports for the other core apps that are not on Gitlab.
@PhoenixLandPirat Its all about how the device identifies itself on the USB bus. If it identifies as headphones it doe snot matter how it is internally working. If it identifies itself as soundcard for example thats another story.
@KrishneshG It's more like for experimental or hidden stuffs that hasn't been merged into the system settings app. And I guess if someone has the time, many of those settings can already be merged into the system settings app.
I think that has been raised before and I agree that it can be confusing where you are coming from other OS. However, once you understand how it works, I think it's fine.