They do JUMP upgrades that's how I got my phone last year. All they do is verify everything through T-Mobile my account qualifies for regular upgrades also, but they've changed the reservation system. You have to reserve after 12:01 a.m and at that time I'm sleep lol!! I've tried to set an alarm to wake me but I never seem to be able to get up
Are you saying it's possible to do a T-Mobile JUMP upgrade through the Apple Store app and/or website?