I'm flying the Phantom 3 standard and I don't think it has a dedicated RTH button on the controller. My controller has a slide switch to turn it on. I wish it did have a that button, I would feel a lot safer. I have had it Return when the signal was lost due to flying too far. But I believe that is programmed into the drone, I was wondering it there is switch or a way to get it to fly up to the designated altitude and then RTH. I did switch the controller off today and it did the RTH procedure. Just curious and like to learn the easy way instead of the expensive way. Guess I better get the insurance!!!