Help Help please

[scarce1204]

i just unclocked my infuse 4g from att, did not know that ididnt need to but anyway i got my straight talk sim card activated and the calling part is working just fine but i cant use data on anything. Ive changed the apn settings like 4 times already. My other phone that i was using from straight talk did not require a sim card but it is still working for some reason. I can do everything on it. It should be deactivated already. And on the infuse it is stuck on the edge network type. Sometimes a single g will pop up but i still cant use data. Can anyone help please.