.. posted on here a while ago, about ultrasonic sensor errors and strong remote interference.. well after sending back drone four times. And after resetting drones to factory settings, calibrated vp sensors on all drones. Done on DJI assistance 2 v 1.2.3 oh did remotes too. Then did IMU and compass calibrations.same thing so off to DJI again..all these errors showed low interference on HD screen..one wanted to fly away twice during a rth .. we also have two phantoms, bought a used inspire 1 dual remote, got a spark new that all fly flawless.. getting afraid to fly these mavic pros.. anyone else out there with these issues ??..

Oh all this repair replacement done under warranty