I currently have a factory-unlocked 16GB iPhone 4S. The phone is unlocked because I bought it off-contract from the Apple Store for the unsubsidized price of $649. This time around I am upgrade eligible, so I purchased a 64GB iPhone 5 with my AT&T upgrade for $399. I am currently out of the U.S. for an extended-period, so I do NOT want AT&T service and am planning on paying the $325 ETF the day that I get the phone. My question is... how does paying the ETF affect my upgrade eligibility? If I get the phone on 9/21 and pay the ETF, do I immediately become upgrade eligible again because I am not in a contract? Thanks!