I have had my Mavic since March 17. I was hoping I could resolve the focus issues I have in the videos, but so far no luck. I have tried everything I can think of, but nothing works. I have tried many different styles, use the Histogram, and know how to set the camera, but still I get crappy out of focus video. I even set the sharpness to +1.  Any reccomendtions that I might not have tried?
As far as sending it in, would they want the whole Fly More kit back, or just the drone?

If you could upload a video would help to see. Bind C1 to focus manually and take it off auto.

As hippoz said, post a video, what phone/tablet FW you have...