Ericsson wireless card

[The Question Asker O.o]

I have a Sony Ericsson internet card. The plan I have has voice and unlimited internet. Do I need a separate data plan specifically for using the wireless card? Or should it work using just my internet feature?

 

[Beyond Mordant]

yep. at&t has an unlimited data plan via aircard around $70-$80. If you try to use your current sim and plan with your aircard, it won't work.