Hi there, My iphone 4 have a really weird problem. It's running on firmware 4.1 jailbroken. Here's the breakdown on the fault: - After about 20-30 seconds of recording video, the light starts to dim. - About 45-50 seconds in, the phone automatically turns the screen black. - I tried pressing the power button or the home button and it returns back to the camera app, but the previous video recording session has ended, I have to start a new session. How do i fix this? Any kind people, please help. Thanks in advance.