*Make sure the On/Off button of remote is turned on.

*Make sure the batteries are installed correctly with enough power.

*Make sure the power switch on the drone is turned to ON.

*Make sure there is enough power in the drone battery.

*Charge the battery or replace it with a fully charged battery.

*Turn off both devices, and turn on the drone first, then the remote.

*Check if there is anything stuck into the blades/motors.

*Land the drone and restart to do a flight calibration as instructed.

*Fly in an environment without wind.

*Trim the flight accordingly.

*Make sure the distance between the drone and the remote is effective.

*Check and make sure batteries in both devices are installed correctly with enough power.

*Pull the Left Control Stick backward to land the drone, and hold it for 3s at least until all the rotor blades stop rotating, then check if the blades get loose. If yes, please press down the center part of the blade to adjust. Then calibrate the drone again.

*Check if there is any hair or grass stuck in the motor.

*Make sure the blades are not loose.

*The blades are marked as A1&B1, and it must be compatible with the model printed on the motor arms. Check and make sure the blades are correctly installed.