When I first connected, the DJI GO 4 app only blinked and blinked on the screen.


Then some googling: boot the phone, and it will connect.

Yes, worx. BUT: very annoying every time boot the phone.


Is there any permanent solution? Yes. I have the latest RC firmware and MAVIC PRO too has the latest.

Samsung J5 is not in the recommended device list, but you can also try to re-install the APP, and run the APP when your phone is in Airplane mode, see if it works. Besides, check the developer options, make sure the USB debugging is enbaled.