Will a text be sent if I deleted it before it was delivered?

I have an Iphone 8 plus, and I sent a text and i had little/no service. I had "No Service" and then one bar (No LTE or 3G) it was just one single bar. I then sent it as a text message, but the blue line on the top of the screen was still there trying to send it. It said "failed to send text message" but it didn't have the "!" next to it. I then got fed up and deleted the one message, do you think it was still sent or did I delete it?

What's your mobile carrier? Why and how do you keep losing signal?

A message won't be sent if you have no internet connection.