One afternoon the doorbell rang in the London flat of Peter Sellers‘ . As Sellers was busy in his study, his wife Anne went to the door, where she was handed a telegram. The message said: “Bring me a cup of coffee. Peter”.
Thus: based on the later experiences of spouses all over the world we can claim that peter Sellers was the first person ever to use a text message, to request a service from someone in the next room, that they could no doubt have done themselves with marginally less effort than it took to send the message.