I recently purchased this Maxx 2 and (along with several other quite irritating features of the Android OS) have discovered a single issue that I can't make sense of: The notification tone cuts itself off when the phone is locked. I'm using the standard 'message' application. Not the Verizon one. No, thank you, I don't want suggestions of other apps to use. I have no interest in them. My audio notification could be described as 'Dun dun dun dun'. If I have the phone active or am in the app, the tone works fine. But if it's sitting on a table somewhere and locked all it does is 'Dun du-'. The sudden cutoff of sound produces a little bit of a mechanical chirp. Any indications of why it is doing this would be helpful. Bonus points if you can tell me how to stop the application from giving the notification sound when I'm already in the app and looking at the screen. Because: seriously.