I have a Droid RAZR MAXX HD. This has been happening since day one where if I'm connected to WiFi for an extended period of time (3+hrs) my Mobile Network State would be disconnected and I cannot send/receive picture messages, and I cannot send/receive texts messages. If I turn off my WiFi to force a Mobile Network connection my screen would show signal strength but no 4GLTE/3G/1X is shown. I have to either restart my device or go into Airplane Mode for 30 seconds or so then reconnect and forces a fresh Mobile Network data connection. Any thoughts?