The DJI Phantom 4, classified as a quad-copter, utilizes a combination of a mobile device and a separate remote controller to control its flight, which means you’ll have to download the mobile application to take advantage of this advanced combination.
At $1,399, the Phantom 4 is one of the more expensive drones available. It is commonly used for film & photography, but in the end, what you use it for is up to you.