Here are our eligibility details: -- I can upgrade to a new phone at the discounted rate on November 25 -- My wife can upgrade to a new phone at the discounted rate in February 2012 I have an iPhone 4, she has an iPhone 3GS; both with unlimited data on AT&T Question, when November 25 comes around, can I buy the iPhone 4S and give her my iPhone 4 to use without paying an activation fee for her? Meaning, can I just take out her SIM from the 3GS and put it in my iPhone 4 and be on our merry way? Or will I have to pay an activation fee? Now on to a slightly more complicated question. Since she's not up for an upgrade until February, would it be possible let's say when the iPhone 5 comes out next year (I likely won't be eligible on day one if I get the iPhone 4S in November) to use her upgrade eligibility to get the iPhone 5 and then swap my iPhone 4S SIM into the new phone and let her keep the iPhone 4S?