pls help me with unlock 2g 3.0 with redsnow

[aslam_blr]

i update my 2g iphone with the latest 3.0 then unlocked my iphone with redsnow now my question is i have a at&t and t mobile simcard how will i know for sure if my iphone is unlocked
when i insert at&t simcad it searches then says no service again i did insert t mobile simcard it searches and says no service

pls update with this issue really appreciate for your great help
thanks in advance

[blkcadi]

did you choose (put a check) to "Unlock" when you jailbroke your phone?

[aslam_blr]

yes i did check unlock phone everythign went fine now all i have is dummy simcard from t mobile and at&T when i insert these one by one it searches for network but never shows a t mobile or at&t logo even though its dummy simcards

[blkcadi]

Dummy sim cards? Perhaps that's the problem Try a sim card that is activated.

[aslam_blr]

but earlier a year back i use to insert dummy simcard it atleast use to show the carrier logo why is it not showing it now

[blkcadi]

I believe it is because you are using 3.0 now.