Does anyone know why it happened? The video clearly shows the ridiculous distance.
Ps: fcc was on

Best way to get help/advice/explanation for your issue is to upload your flight log for this issue.

To post your flight data, go to: https://www.phantomhelp.com/LogViewer/Upload/
... where you'll find instructions to upload the data to that site and it will give a report.

For help interpreting the data you can post a link for the report here or just post the .txt file.

Hello, there. We're sorry to hear about the mishap. May we confirm the condition of the aircraft? If you need to send your drone for service, you may use this link. Furthermore, please know that as long as the aircraft is within the warranty service, we can conduct a data analysis to determine the cause of the incident and for possible warranty. Thank you for your cooperation.

i have the same issue, even with FCC on, the range is really POOR, even when i go behind som trees the signal quality drops to like 5mbps.....

in your video, it seems like you go behind a building.
but i saw video's of people flying inside of buildings going behind several walls etc without any issues....

I lost all signals, video, motion , and gps in a line of sight of around 300 meters distance, no obstacle between drone and I and next thing I see when video came again, was drone crashing against a tree on a hill that was far far away…. I reported the flyaway and I am was told “I was the one who flew it to the obstacle” , even though video clearly shows I lost any control…