The color and icon next to your message will change ... Here's what the check marks mean on Facebook Messenger Empty circle with no check mark: The message has not been sent.

To tell if your message isn't delivered, it will have an empty circle with a check mark for an icon. Facebook doesn't make it easy to know whether someone has blocked you. They do this for privacy ...

If you’ve ever sent a message to a friend on Facebook Messenger, you’ve probably noticed a little check mark icon next to the message you sent. They’re nothing to worry about, but these ...