[AC Question]

I am trying with latest AndroidAuto(2.0). I have some observations below:

1. Connect AndroidAuto and start AndroidAuto projection.
2. Then click on VR icon(top right), VR session will be started.
3. We can send AAP_KEYCODE_SEARCH to MD to cancel ongoing VR session
4. When i sent AAP_KEYCODE_SEARCH to MD, VR session is cancelled but
heard some tone at the end.

This end tone is audible only in some phones like Nexus 5(Android Version : 6.0.1), LG G3 (Android Version : 6.0)
but it is not heard in other phones like Nexus 6p(Android Version : 6.0.1), LG G4(Android Version : 6.0)

Is this an issue or AndroidAuto feature?

If it a AndroidAuto feature why end tone is audible only in few MD devices?