Whether you can use a smartphone camera depends on the phone and the camera's software. The lens on every phone I have seen is in the upper corner, making setting up the shot more challenging. It's not impossible, but to switch cameras, I need to change a lot of things, like camera mounts.
Phone cameras have wide-angle lenses, which means the subject has to be very close or use Zoom or be able to crop the video after you record it.
I can't use autofocus with any of the cameras I tested. Why? I am shooting a rectangular object, and when the front or back comes in line with the camera, the autofocus starts to hunt. The hunting causes two locations where, for a few seconds, the object is going in and out of focus. The autofocus can't be turned off on my phone. I might be able to turn it off on my JVC video camera, but I didn't look. My Canon T7i has a switch for autofocus on the lens. There is no additional work.
In the video, he uses a phone that may have cost more than I paid for Cannon T7i. He is shooting a basically round object that doesn't cause a problem with the autofocus. He doesn't pay any attention to colors. I use white light 5500K (aka daylight) and a photo tent to defuse the light and render the color correctly. I have tried other colored backgrounds, but it is nearly impossible for me to get the colors on the object correct.
This video was shot with the Canon T7i. The autofocus is faulty in two places. The phone and the JVC video were a lot worse.
Cannon T7i Auto Focus On Turntable.mp4