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lego8

macrumors regular
Original poster
Hi,

In order to get an iPhone 3GS at upgrade-eligible pricing, I upgraded a line on my account which is not currently an iPhone line. Currently I have an iPhone 3G. When the new 3GS that I ordered comes, can I just pop in my current SIM card into the 3GS? Then, can I use my iPhone 3G to the line that I ordered the 3GS for? Will this all work seamlessly?


Thanks!
 
I could be wrong, but I think what you will want to do is activate the SIM in the 3GS first, then just swap SIMs.
 
So you're saying that I can't swap in my current SIM card immediately when I get the phone?
 
That's what I did going from v1 iPhone to 3G, but I think this time around going from 3G to 3GS they just left my old SIM card out of the equation. As others have said, give AT&T a call and they remedy the situation....😎😎😎
 
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