GoPhone SIM card in Blackjack?

If I get a monthly GoPhone plan would I be able to use the SIM card with a Blackjack phone?

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i have the same question
could i sign up for a new GoPhone buying just the sim card(and a new number) while using my Sony Ericson phone(which is currently on a monthly AT&T plan)

question answered here: http://cellphoneforums.net/att/t2955...g-t-phone.html

Yes. But the Black Jack actualy has alot of isues on pre-paid. Mainly data,such as internet and pic msg. Plus it is a "data" phone, meaning it uses alot of data, so since gophone charges you a rate of .01/kb, you could recieve random data charges without even touching your phone. I dont recommend it. But on the flip side, a sim is a sim. Its the compatabilty of the service that you have to worry about,you can put your sim in any ATT phone just make sure you disable any security locks before switching.

its really not worth it, there are more cons than pros