How to Check Your Upgrade Eligibility From Your Phone
Have your sights set on that hot new iPhone 4 but don’t know if you are due for an upgrade or are going to need to pay retail? AT&T has made it incredibly easy to check
your status. All you need to do is dial *639# from your phone, and wait a few seconds for a message to appear telling you (and your wallet) your fate. Happy upgrades!
