As you can read, the title is pretty self explanatory. I need to buy an iPhone 4s here in the US and use it in Italy with a different Sim card. I have a few questions. If anybody can answer, I will be grateful. 1. Is it possible to buy an "unlocked" iPhone 4s? I bought an iPad 2 with at&t in the Us and use it in Italy perfectly fine with a different sim card. 2. Where can I buy this iPhone 4s in the US? Which store sells them unlocked at full retail price? Amazon, Apple, Verizon, at&t? 3. Will SIRI work in Italy? Thank you for any help!