I have taken out the battery and put it back in for the last hour and I cant unlock my phone at all. I cant type or use the track ball. It froze right in the middle of me reading a message and it hasnt been working ever since. When I put the battery back in to unlock my phone I cant type. WHen the screen goes dark (powesave) I cant do anything to bring the screen back up.WHat else can i do short of throwing my phone out of the window?