ok my 3gs is 2 and a half years old and is pretty much on its last leg. i tried to get help on here to fix it but didn't get much help. basically its jailbroken but i have to keep it in safemode just to use it. if i take it out it just reboots by itself and then wont turn on until i plug it in. people said it could be a battery issue but i already changed it and its still doing the same thing is there anywhere i can get an iPhone 4 and not spend $500 for an unlocked phone. i don't need an unlocked phone i have AT&T. all the ones im seeing are all like 500 dollars and most are unlocked. does any one have a used iPhone 4 that simply works that i can buy privately? 1 so i don't have to pay an astronomical price for a used item and 2 so i don't have to waste my 2 year contract upgrade on a 4s if the 5 is comming out in a few months. i just want somthing to hold me over till i can get the new one later. if no one has one where can i look?