G Stylo with LS770ZV9 Marshmallow update. Updated PRL already. For some reason, when I receive a text message, it does not always notify me. Not only no sound, but not in my tray either. The message is there, but I don't know about it until I open my messaging app and see it in the inbox. Sometimes I get a notification, other times I don't. Seems to screw up most often (but not exclusively) when I have an app open which uses sound, such as iheartradio, YoutTube, or Netflix. I am using the default messaging app and the ice cubes pre-installed notification sound. Notifications for all other apps seem just fine. I can't seem to duplicate it on command, its just random.