I would like to make the switch from my bb to an android phone. I like the looks of the Nexus S and would like to purchase one. I need it to work with a 1900 mhz GSM network as I am going to be using it in Central America. The 3G version is fine as our network doesn't have 4G anyway. However I have a US shipping address that this will be shipped to. Sorry for the noob questions but I need to to be the latest 3.2 OS and be able to download apps openly etc...Must be in good cosmetic and working condition. Thanks!