Hey guys! I am going to Europe this summer for the first time, and I know very little about cell phones there. Is there a prepaid SIM card that works on an unlocked At&t phone (iPhone 3G or not) in England, Germany, France, The Netherlands, and Italy? I'm not sure if I should yellowsn0my iPhone 3G. I will probably just get an unlock code online for my family's LG Shine or BB Curve 8310 for like $25. Thanks in advance for any help!