I've found lately that occasionally I will get a text without an alert, i.e. there will be no icon on the top bar, there is no message tone and the green light that flashes to show that there is a text will not be on, however there will be a message in my inbox. My best guess is that this happens when a text is sent to me while I have no signal, but I can't be sure about that. Anyone else having this problem? Does anyone know how to sort it out?