I didn't think they unloaded anything at Incheon, but it's highly unlikely that you missed a scan because they scan the entire plane, refuel, change crews, and go. No idea how individual phones in the shipment could be missed, but maybe there was a problem with the plane and they had to swap out planes and the second plane is smaller so some containers couldn't fit and are gonna hit the next flight out? All I can think of, but just speculation, sorry. :/
Well that would suck as I can't even find another flight out of Incheon. My delivery date hasn't changed at all though so maybe there is still hope. Thanks for the insight!