You don't have to stop!

The idea of a last message sent to earh is very plausible ..however there is another message we know very well ...so the movie end with everyone sending messages ? hum dont know i fear that it would create some confusion ..but of course can be a shaw message "translated " by the SJs technology .

I think that transmission occurs long before the film ends Frantz, Just a guess, But I would say it's out of sequence in the trailer and you can pretty well bank on it.