I have jailbroken my iPhone 4 and then after a while I decided to take it away. I then connected it to my computer and restored it using itunes. After restoring it won't open. I see the "Lightning" sign to show that it's charging, and then it tries to open by showing an apple sign and a loading circle. But after that I never get to the screen where I have to slide to unlock. It doesn't turn on. After charging it for hours I remove it from the charger and it says I have to connect it to the charger again. It doesn't charge either. WHAT THE HELL HAPPENED TO MY iPHONE?! PLEASE HELP ME!