I am traveling to Greece in 1.5 weeks. I have two iPhones..iPhone 4 and iPhone 3G. I recently jailbroke my iPhone 3G and unlocked it. I tried it out on Tmobile and it worked fine…sending a text, call, internet and email. When I go over to Greece…will I just be able to insert the Vodafone prepaid sim and that’s it? Will I be able to do everything listed above? I was reading a post about APN settings. Do I have to change them when I am over there? If so, how and what do I need to do? I would like to have access to all my features, on my iPhone.