Hello! I want to try out jailbreaking. But I got a few questions: 1. My phone seems to be one of those iPhone 4's that have this problem: http://www.topiphoneresource.info/iphone4-wont-turn-on/ It turns on when I hold the home and power button for 15 seconds, but it is annoying. Will holding the home and power button work while my phone is jailbroken? 2. In the article above, you may have to send in your phone and get a replacement from Apple. But when you jailbreak, you lose your warranty. The only thing I need to do is re-install everything on my phone from iTunes? 3. What should I actually do if my phone turns off and won't turn on while it's jailbroken? Am I pretty ****ed up then? Please share your thoughts and ups/downs with jailbreaking. Thanks!