So Ive been lurking here for a few months, and never registered because i never really had anything to add/share. But now i think i might have a valid question . I'm currently in NYC with an iPhone 4s running 5.1, stock but waiting for a JB, and I'm planning on moving to Australia around the new years/feb mark. Since my contract won't be up until Nov 2013 i won't be able to update to iPhone "whatever"... and am still planning on staying with the 4s, just going to possibly give my mom my sim to use in another phone. What are my chances of unlocking or will the ATT 4s work with a foreign sim if I'm out of the US, since i know Verizon does that but not too familiar with ATT as Ive never really had to figure it out. Guess my question to the Aussies would be what are the chances apps/ functions that work in the states might not work in Australia eg siri. Is there anything else i should keep in mind or watch out for if i do migrate with my phone? Thanks.. hoping this isn't too stupid of a question.