My friend is going to South America and needs to unlock her AT&T Samsung brick phone so it works with other GSM carriers down there. Any idea how to go about this? I haven’t been able to find anything about it, which doesn’t surprise me, considering it’s a Samsung brick phone, and not an android. I figured you could simply slip a different SIM in there and it is ready to go, but she’s claiming that AT&T said it’s not as simple as that. Hopefully someone can help us regarding this. How to unlock Samsung Brick phone? Please help. Thanks.