If you want to text someone that is not connected to the internet, an iMessage will send but not deliver until the recipient turns on their connection. By forcing your phone to send as a text message, the recipient will be able to receive the message as long as they have a mobile network connection.

What does it mean when your iMessage says sent as text message?

It may mean that the person to whom you're sending the message has either signed out of iMessage or does not have an active data connection (either cellular or WiFi).

Am I blocked if iMessage sent as text?

Method 2: Sending Text or iMessage to the iPhone Number to Check for Block. ... If the iMessage never shows a “Delivered” or “Read” message, and it's still blue, then you may have been blocked – but not always. If the iMessage goes through and shows a “Read” receipt, then you have definitely not been blocked.