i was thinking of getting an unlocked at&t 9700(i am on rogers) i have read around and people say in order to get 3g and calls to work is if u have a 3040 sim card not the new 4000 ones. i looked on my sim card and the middle column has the numbers 00511...? i looked at all the rows and it does not have a 3 or 4 thousands. will that work on 3g with calls or no? i got the sim about 10 months ago
