Hi all. I'd like to buy an Iphone 5 to use in Brazil. I've heard a lot of comments like Verizon comes unlocked but AT&T not. I've also heard that there is a unlock process I can do my self like Unlock Fusion website offer..etc... What is true ? Is there any unlock method ( software) I can do my self or I do need to use a turbo sim? Should I buy a Verizon or AT&T? Regular Verizon Iphone should work or I need to pay the full price for an unlocked cel phone? The only problem is that in Brazil we are starting on 4g right now but the band is not the same as the USA band so the Iphone 5 won't work in 4g.. only in 3g . Thank you all!