How to shoot the star track with iPhone?

Iphone shooting orbit? It seems that only a SLR camera can accomplish such "high", "big" and "high" tasks. It's impossible for a mobile phone to shoot a star track. It is reasonable for you to think so earlier, but with the great progress in the shooting effect of smart phones, the camera function is full of tricks, and shooting star tracks is no longer the patent of SLR, and mobile phones can also shoot star tracks. I want to see how mobile phones shoot stellar orbits. If you are interested, keep watching. Mobile phones shoot stellar orbits? It seems that only a SLR camera can accomplish such "high", "big" and "high" tasks. It's impossible for a mobile phone to shoot a star track. It is reasonable for you to think so earlier, but with the great progress in the shooting effect of smart phones, the camera function is full of tricks, and shooting star tracks is no longer the patent of SLR, and mobile phones can also shoot star tracks. I want to see how mobile phones shoot stellar orbits. If you are interested, keep watching.