Vibrant on different data network

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Hello all.
I have unlocked Vibrant. I am traveling to Romania. I bought Orange Sim card, it works in my Vibrant, but I don't get any data service, does anybody knows how to make it work?

Thank you.

that's probably because you don't have the APN settings in your phone. either google their APN or just call Orange and ask them to give you the information that you need.

Yes, you are going to have to call them and ask them for the APN settings. Thats what I did and I am using the MySimpleMobile sim card.