I had a terrible experience with my iPad Pro 12.9 today ... it would not charge and the charging indicator just kept flashing on and off and the iPad kept making the chime as if you were plugging it in . So I went back to the apple store and they exchanged it again then the second one same 256GB WIFI silver model same issue .... so a 3rd trip into the apple store they had no more to to exchange it with nor did they really know what was going on with it so I ended up having to pay for a 12.9 256GB SpaceGrey LTE and it seems to be ago however the charging percentage does not seem to change ... still