iPhone 3G to 3GS upgrade - Switch with Wife?

[Xibalba]

My wife and I both have iPhone 3G phones (and have since July 08). The speaker in my iphone is dead and I have tried everything online to fix short of opening the iPhone. My wife is eligible for the $199 upgrade to the 3GS but I am not and have to wait until March 2010 or pay $399 now.

If I upgrade her line to the iPhone 3GS (for $199 and new 2-year contract of course), can I use the new iPhone 3GS instead of her by just simply using my sim card from my current 3G (with the bad speaker) and restoring a backup from iTunes when the 3GS arrives? And no, she does not care - I have already asked her.

My main question is just if there is any way AT&T ties the online account info on hardware with the sim card to where if it shows that I should be using the 3G and not the 3GS if we will have any problems. I don't think there will be any problems, but I need much more expert advice. Thanks.

 

[vespoli]

You're in the clear.

 

[Exegesis48]

I've done this with my wife, AT&T will actually assist you. Just explain which lines are going to be on which phones at the time of the upgrade and they will make the appropriate arrangements.

 

[army91c]

I used my brother's upgrade to get my wife her 3gs. His wife wouldn't let him have iPhone any more.... cost issue. I bought him a motorola and bought a new 3gs. My wife is happy, my sister in law is happy, brother got a new phone for free every body wins. Now my wife is due for an update in June 2010 and you know what's going on right around there don't you?

 

[sdsvtdriver]

Go into the Apple store and ask them if they know how to fix it. Perhaps you'll find a nice genius that'll just swap it.