If someone wants to help me out here, feel free. I've never done this, so I don't know how. Here's what I have and what I would like to have. I have a iphone 4s. I have ATT service. I can upgrade if I want to a 5 or whatever I want. They said I can have my phone unlocked (the 4s) because I have it over two years. I would like to have a phone that I can somehow use in Israel whenever I might go there (occasionally). And inexpensive. I do not know the details on how it works. Should I first unlock the phone before switching to another? And then what.