Completely agree with martcerv. I too have had a fly away in GPS mode, couldn't recover in time, and crashed it doing full tilt throttle into the ground. I was probably flying it in a place I really shouldn't have been flying either, and I'll be the first to admit that, though at the time, I really couldn't figure out why it happened and I was confused and severely pissed off at DJI as was the OP in this thread.
Upon close inspection later, it was my fault entirely. I had the phantom packed in my car's trunk for several hours in it's case.... RIGHT UNDERNEATH the 6x9 speakers mounted on the rear deck of the trunk. This is something I constantly had to remind myself NOT to do, yet I ended up stupidly forgetting my own warning and doing it anyway. The large magnets on the speakers did a number on the compass, and that in turn screwed up the positioning algorithm the phantom relied on in GPS mode, pitching it uncontrollably into the ground.
I manned it up and fixed it myself. The crash was severe enough to crack one arm of the airframe. The cost of replacement shells isn't unreasonable, so I just took it apart, moved everything over to a new shell, and called it a day. Now call me what you will, but I suspect a good number of these fly aways are user error.... they just don't know it yet and want DJI to pay for their error. I also suspect a good number of these fly aways happened in GPS mode and involve issues with the compass.
On the other hand, all the H3-2D issues are another matter entirely....and at least DJI was decent enough to have the dealer exchange mine for another, though I did have to pay for shipping one way.