Hi,
I have a 3g iphone jailbroken with 2.0 firmware.A couple of days ago my daughter was playing some games on it.Later I decided to put it on charge.The next day I say the battery was still low and slowly it lost all its charge.Now when I power it on It shows low power and plugin.But after plugging it in nothing happens no charging screen.Cannot go into Dfu mode also.Tried charging on wall,computer and car nothing,even changed usb cable.
Still under warrany but cannot take it in as jailbroken. Any help will be appreciated.

Thanks all.