iPhone X: iPhone Upgrade Plan or One-Time Payment Currently, I am planning on upgrading my iPhone 7 (128;Black;AT&T) to the iPhone X (256;Space Grey;AT&T). Last year, I did not join the iPhone Upgrade Program, however, I have increased interest due to Apple's new product pipeline. In the past, I have only upgraded on whole numbers (not iPhone #S). From your experience with or without the iPhone Upgrade Plan, do you think it is worth it? I am looking for your experience and listing your Pros and Cons for the iPhone Upgrade Plan versus the One-Time Payment. Also, how does the 12 month Upgrade worth with 24 installments? Thank You! P.S. I am grandfathered on the AT&T Unlimited Data Plan (If that affects anything).