One phone:
Anchorage, AK, United States 11/03/2017 12:54 P.M. Arrival Scan
Incheon, Korea, Republic of 11/04/2017 1:17 A.M. Departure Scan
Incheon, Korea, Republic of 11/03/2017 10:07 P.M. Departure Scan
Incheon, Korea, Republic of 11/03/2017 7:26 P.M. Arrival Scan
The other phone:
Incheon, Korea, Republic of 11/03/2017 7:26 P.M. Arrival Scan
What I think is going on - The individual phones are not scanned, but groups of phones. In Korea, the group containing my other phone missed a scan so it was not associated with UPS 99 and is not getting the subsequent scans. I bet it is still on the flight. It may not get any scans until after it leaves UPS 99 in Ontario. Probably will not get an arrival scan in Ontario either. After that I expect it to get scans again when no longer associated with UPS 99.
Just my theory.
I like the theory and I’m going with it!