I am planning on pre ordering the iPhone X - I am going through the steps to order the phone on apple.com and it is asking me to enroll in the iphone upgrade program - I want to be in that program but is it going to make me fill out a bunch of information before I can order? I want to get the phone launch day and know I need to get the order in asap, anyone know if I can sign up before pre ordering so my order doesnt get slowed down?
No, unfortunately you cannot pre-enroll in the Apple iUp program....
You can upgrade your line through the Apple app during preorder, with the caveat that Sprint servers are online and can verify the upgrade eligibility query at that moment.