HI!

When i can fly mavic pro with my Honor 9

Are you asking or telling us something?

Try it and see....

Seems like that would be up to you...

Okay i ask Why connection between drone and controller shutdown all the time?

Hi sir, just to verify, do you mean that your drone and RC always disconnect with each other, or the app crashes all the time when you launch it or the mobile device is not able to connect your RC at all?
If it is the first case, please try to link the drone and controller once again, then check if there is a need to update the firmware.
If it is the app crashes all the time or app disconnect the RC, please try to remove the app and install again, and try to change another connecting cable, note that you need to remove the left short cable first when you plug the cable to the bottom port.
If it doesn't help, please try a device that is on the support list to ensure the compatibility, and check if it is the USB port issue. If it can connect another device, then you can try to wait for the next update of the app and try again. Thank you.