This video -- created by the Socialplane platform -- shows that we don't need phones to send messages to people. They promote the use of something way cuter instead, paper planes.
I'm sure that we are overdoing this social media thing and we shouldn't pay that much attention to our phones and all that, but I don't think we can help it. We are programmed as social beings and technology is nothing more than a tool that excites that inherited behaviour.
You can download the paper planes here.