Hi All* I have no idea where to post this* as it is my first android phone I have needed to unlock* but does anyone have any idea how to unlock or semi-unlock my Sky Vega? It is the original model.

I am in the US* and I stopped by the Sky service center in Korea before I left and asked them to unlock it. They said they did* but my current prepaid SIM card with AT&T doesnt work with it* but the one that the woman at the AT&T shop had her SIM card come up with a ROAMING signal at full strength.

Any suggestions? Thanks much!