Cause 2 of 4: Mobile data is turned off
To send and receive picture messages, you need to turn on mobile data.
Solution: Turn on mobile data.
1 Find "Data usage"
Slide two fingers downwards starting from the top the screen.
Press the settings icon.
Press Data usage.
2 Turn mobile data on or off
Press the indicator next to "Mobile data" to turn the function on or off.
3 Return to the home screen
Press the Home key to return to the home screen.