Can someone PLEASE PLEASE tell me what the blue arrown on text messages means??

[cobaltnickel]

Sometimes when I send a message to someone I get a little envelope with a blue arrow on it. When it sends to the person, it's a green arrow, and when it doesn't send, it's a "text message not sent"

I don't think the message is received when the blue arrow appears.

I NEED TO KNOW WHAT THIS IS.

So far, no one has been able to tell me.

Help please?

 

[dezymond]

Guess you didn't get your other thread answered.

What app are you using to send text messages?

 

[guidot]

The blue arrow is a text sent to an out of network cell phone number. IE not VZW.