There could be several reasons why your drone controller loses connection during flight. Here are a few possible causes:
1. Interference: Interference from other electronic devices or radio signals can disrupt the connection between your controller and the drone. Try to avoid flying your drone in areas with a high density of electronic devices or radio signals. Do not operate the drone from inside a vehicle.
2. Signal range: The signal range between your controller and the drone is limited, and if you fly your drone beyond this range, you will lose connection. Make sure you stay within the recommended range for your drone model.
3. Low battery: If the battery on your controller is low, it may cause the connection to drop. Always make sure your controller battery is fully charged before flying.
4. Obstacles: Obstacles such as trees, buildings, or other large objects can block the signal between your controller and the drone, causing the connection to drop. Try to fly your drone in open areas with few obstacles.
5. Firmware issues: Sometimes, firmware issues can cause connection problems. Check if there are any firmware updates available for your drone and controller and install them if necessary.
6. Hardware issues: If none of the above solutions work, there may be a hardware issue with your drone or controller. Contact the manufacturer or a qualified technician for assistance.
Remember to follow all safety guidelines and regulations when flying your drone, and always keep a close eye on your drone during flight to ensure a safe and successful mission.