What phone do you have? Moto E4
What plan are you on? $15 talk & text
Does your plan include data, or just talk & text? No data (though my data is turned on on the phone - I know that is a common issue)
For the past several months, I have had issues with sending or receiving messages when I do not have Wifi. It seems to be somewhat location dependent, but I am in the middle of the city. I have cell, but it says I have no ability to send or receive messages. Before the summer, I did not have this issue, so it has worked properly on this phone before. When I have wifi, everything works as it should.