thanks for your attention, then my cell phone and a samsung galaxy 5, I don't think it's the problem because I tried even with a note 8, the same problems. before the update everything was fine, after I can't make the calibration of the magnetometer the app crashes, the light of the drone and the skycontroller become fixed but even if the app is closed the drone does not take off, if I launch it flies in the app, the same crashes