I have a DJI mini 4K using a Samsung android and have around 6 hours of flight time. I live out in the country and this morning when I went to fly it traveled about 600-1000 from me at around 150 ft. elevation showing a good signal with no obstructions between my TO point and where it was at. I suddenly lost the all connection with it and pushed Return to Home button but it never came back. My crop is just seeded so it was easy to find it. It broke a blade and other wise no other damage. The power was off on the drone so I brought it back and cleaned it off and replaced the blade, tried it again and it quit flying and fell to the ground in the same area. Went to another location and it did the same thing at around 600-1000 feet away. Another drone pilot asked if my memory card was full and I said I never used one. So with my phone still connected to the controller he deleted all the pictures and videos that were taken with my permission and said that should take care of it. Well it did it twice more so what is going on? I await someone with a possible solution, Thankyou.