I am unable to receive a text message sent to multiple recipients UNLESS I am connected to the Verizon 4G network. I will not receive these types of messages if I am connected via WiFi. When this type of message comes in I do not get an audible alert. I only get the notification icon on the title bar at the top of the display. If I'm not connected to the 4G network I won't see the message until I do so. Any idea why this is? My friends don't seem to have this problem (whether they are on Verizon or not).