1. Lock screen background image is not coming in android 6. There could be some permission issue. Lock screen background should come as in other android versions. (Why do we need to take permission to make phone call in android 6?)
2. Presets of Equalizer setting is not reflecting the change (Bands are not changing) when music is not playing. For instance, set preset at rock without playing music. It will not change the bands. The user must be given the option to change the setting with or without playing music. Remember, we have also give auto syncing of the genre with the equalizer. Do not temper with this feature.
3. App must retain the state of the last song played and also retain duration which has been played. So that when user re-open the app, he can start listening where he had left last time.
4. Add to the playlist is not reflecting the change immediately and same for creating new playlist. When even you add any song to the playlist it does not add it immediately. It shows songs only after re-opening the app. Same is true for creating new playlist.
5. Edit is not working in artist and album. It removes the songs after editing.