To check your upgrade eligibility, just dial *639# from your iPhone. AT&T will send you a text within a few minutes detailing how much you’ll pay to move up to the newest iPhone model — excluding the cost of the phone.
Don’t miss the best of The Mac Observer
Set us as a preferred source and our Apple reporting ranks higher in your Google Search results and Discover feed — one tap, no account changes.
AT&T’s upgrade eligibility message
In my case, I’ll be paying US$18 in addition to signing a new two-year contract to move from my iPhone 3G to the new model.
This is a quick and easy way to check your upgrade eligibility, and AT&T doesn’t charge you for the text message.
![[Review] INIU SnapGo Air 10,000mAh Power Bank: A Slim Battery Built for Everyday Carry](https://www.macobserver.com/wp-content/uploads/2026/07/Best-Magsafe-Power-Banks-iPhone-2026-Featured.webp)
Discussion