Two days ago, out of nowhere and without changing any settings, the factory text/Messages app started acting up. The notification sound will not sound off, the vibration will not vibrate, the app button will not show how many new messages there are, and the notification light will not light up. I have restarted the phone and it fixed nothing. I need help please, I love the factory messaging app and need it work. Is anybody else experiencing this problem, and is there a fix?