I bought a phone on the U.S. (Prepaid phone from AT&T Samsung A177 ) i unlocked it and now it works on my country the only problem is that the bluetooth doesn't work is it because i need internet from at&t or something that has to do with at&t. To be more specific i live in Guatemala, what can i do so that it works because i can't receive or send anything. One reason is because i can't find other devices, two other devices can't find me.... is there a program where i can install bluetooth on my phone. Please Help!