I'm going to Europe for three months to work on a cruise ship. I'll be going to several countries, mainly in western Europe and Scandinavia. I have no idea where to begin with cell phone use. I have T-Mobile and use a (ugh) Razr, although am thinking about upgrading. Has anyone traveled abroad for an extended period of time and changed their cell phone plan specifically for it? I want to keep my phone number while over there, but don't want to pay a million dollars in roaming charges. Any advice?