" Most drones, right out of the box, usually have their own dedicated controllers unless you choose a cheaper drone model that relies on a smartphone instead of a separate controller. However, regardless of whether or not the drone does indeed come with its own controller, most drones still rely on your smartphone to reduce the load on the controller in terms of computer power for its various functions. This is why you can tinker with your drone’s settings and receive the feed coming from your drone’s camera on your smartphone instead of on the controller. So, while smartphones are indeed great for drones because they allow the controller to focus more on the piloting aspects of controlling a drone, the usefulness doesn’t stop there. You can also use a phone exclusively not only for the drone’s camera feed and settings but for all of the other aspects of flight control as well.