recently my phone has been going to a white screen and the only way to get it off is to beat the back of the phone and then it starts working. the screen also is black sometimes with green lines running down through it. When it does work there is sometimes discoloration on the screen. Any suggestions and I'm not exactly "smart" when it comes to technology so if you could dumb it down a little bit it would be greatly appreciated...I'm in college and my roommate also has the same phone with the same issue.