A few days back, I received an iPhone 2G because I really don't do a lot of crazy games or anyhing so it seemed like a good idea. Until now. I don't have a sim card yet so I had to jailbreak it to be able to get past the insert sim card screen. Right at this second it's on 3.2 os. I expected that after 4 years of use it would have a less than good battery...but everytime I turn it on, it will go to the home screen then cose out due to lack of battery charge...but it's plugged into the charger and it dies even after I let it charge all night...it won't hold a charge...so is there anything I an do to fix this or do I just have to send it to apple to replace the battery? thanks.