Just had a 64GB A1428 replaced.
Under Settings General About
The Old one was Model MD644LL
the New one is ND642LL
Everything Carrier,Size and Color seem to be the same.
Anybody know why the difference?
Mine changed to ND122LL. So it's for "Replacement" models. Although, after three days, I wouldn't consider my new unblemished iPhone 5 a "replacement."