Since I got my iPhone 3G I realized there is simply no other phone as powerful and capable on the market. I'm going to Israel for the year next year, and the iPhone becomes even more important since I won't have a computer or anything. My warranty expires soon anyway, so I'm not worried about jailbreaking and all that. I'm wondering the steps needed to ensure that my iPhone 3G that I unlock in America will be able to work with an Israeli SIM card for an entire year of not touching a computer. How will I know if the phone will work? After about a 12 hour flight, it would be terrible if I put the SIM in and it doesn't work.