I updated my Samsung Galaxy Note 3 to Android 4.4.2 several months ago and have since noticed that I can't send text messages while my data is off, although if I block data usage by using the data management section of the settings, I can still send text messages, as long as I leave the "Mobile Data" button toggled "On." I am unsure if this has only been a problem since the update or if I just hadn't encountered it before the update.
Equally as frustrating is the fact that if I am connected to wifi I can't send SMS either. I can recieve them, however. This is a relatively recent development, though I have tested it in safe mode (same result), ruling out downloaded applications.
Any assistance would be appreciated.