DJI imposes permissions for beeing able to use their software libraries (SDK) and connect to & fly their drones. DH stripped as many of the permissions the DJI SDK by default asks for while not losing the flying functionality. Unfortunately the phone permission was not among these permissions. As a result DH also asks for this permission. Nothing we can do here, as long as DJI enforces this permission. That beeing said, DH uses the fewest amount of permissions among all the flight planning applications for DJI drones.