So, can anyone explain what this means for someone who uses Messages by Google on their Android phone? The AC announcement indicates that Messages is a covered app for purposes of free texting. As reported above, I was not able to use it on my recent AC flight. I assumed that was attributable to some sort of problem with the free text messaging service on that flight. Is it instead a potential compatibility problem with Google Messages more generally? Or some type of Google Messages setting that I can alter?