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If the Remote Controller Signal Lost is not set to Hover, then the drone is in serious danger of rising to Return to Home (RTH) height and heading back to your location. This is a bad thing when indoors, as the drone will most likely crash into the ceiling upon RTH initiation.
It’s recommended to put your phone in no disturbance mode. If the phone has a GPS signal, many of the drone’s features will rely on the phone’s GPS. + How does a drone operate without Wi-Fi or cell service? Drones operate by sending signals from the controller to the aircraft. The signals are wireless and are sent via radio waves, and this will be made possible by the drone and controller. You can control the drone’s direction, altitude, and all the other functions that it performs.