I know there are a million threads about JBing the Iphone 4, but I just wanted to voice my concerns: 1 - I rather have a longer lasting battery than have a jailbroken phone. Is there any chance of my battery performing poorly after JBing? If there is a chance and I retored to factor, will the battery reset as well? 2 - I already had a defective Iphone 4 that I just returned. What happens if something else happens to this new phone and I have to bring it apple. Is there any chance at all that apple can tell the phone was jb even after I restor? 3- The security problem that everyone is talking about once you JB. My entire life is on this phone (Banking, stocks, emails etc.) Is there any way that someone can hack into the phone and get my info. I JB my 3GS and loved it, but I did it after 7 or 8 months of being stock and I was able to tell the battery was getting worse and worse. I would prob use a few apps if I did JB (Bitesms, Facetime on 3g, sbsettings and mywi).