Hey guys, I'm an American student studying abroad in Germany until the end of July. I consider myself somewhat tech-savvy, but don't really have technical knowledge or experience with jailbreaking an iPhone. It's too difficult searching online for a specific case like mine and the internet is cluttered i don't know what site to trust or not, so I would really appreciate it if someone here in this expert community would be kind enough to give me some advice. I have an iPhone 4 on At&t (firmware 4.10.01), but the intl plan is way too expensive to use. For the last month or so, I've been using a cheap piece of crap prepaid phone and using my iPhone as an iPod basically. It's annoying to carry two phones and not being able to use my iPhone to call text and internet. Some of my friends in the program jailbroke their iPhones (but they have 3GS, not 4) and are using it fine with a european sim card and have texting and internet etc. I'm thinking of doing that too, but how easy is it to jailbreak an iPhone 4? Do I have to revert to a lower baseband and would this affect performance in any way? However, is it worth it for me to jailbreak the phone since I'm still on my 2-yr at&t contract (it only started last october)? what happens to that contract once I jailbreak the phone, do i keep paying my monthly bill? Also I'm going back to the us at the end of july and will want to continue using my phone normally. I assume my european sim card will no longer by usable. How do i restore regular american usage without? If jailbreaking and using it in europe for the next 4 months means i'll trouble with it back in america, I may not want to do this. If you think I should try to get it working in Germany, any program suggestions / links to trustworthy guides would be appreciated. Thanks for reading, and hope to hear back from you all.