My boyfriend, who has t-mobile service just purchased an I phone through a friend of a friend. (which could be a red flag) It was supposedly unlocked and jailbroken. He put his sim card in and seemed to work for about a week. He then connected his phone to itunes and he had the box checked that does automatic updates. After that his phone went out. So on Sunday he ran across somebody that jailbreaks iphones we paid the guy 25 dollars he used what was called Quickpwn software, and he told us to never update through itunes because it will make the phone go down again. I also asked him if certain applications that can be downloaded could also cause his phone to go down and he said no...I'm no expert but I think that's a crock. But is it true? Personally why would the guy invest in the software if he wasn't having the same issues as everone else? But maybe I'm being to skepticle! So last evening my boyfriend is looking up apps and starts downloading them and what happen? You guessed it! This is the 2nd time that it's happened and want to know what preventative measure we can take to keep this from happening again, if it's not too late. Apparently the iphone can quit working all together no matter what you do if you're not careful. I have heard a lot of people say that they have no problems with their phone once jailbroken and others say they are always having issues. There are so many stories out there and so hard to tell the true from the false! PLEASE HELP!!!!