My iPhone just totally blacked (well technically white) out on me?

Ok so I have had my iPhone for maybe a year now and maybe an hour ago it just blacked out. Well technically the color was white. Here is the story: So I went to the movies today and while i was there i turned my phone on virbrate and once i got out of the movies i got a phone call. I talked for like 5 minutes. But anyway, while I was in the car (not driving just so you know) I was trying to get into my phone (i have a passcode). And when I tried to type in the passcode it wouldnt let me type in the last digit. Well it did but my phone didnt open up. It just froze. And a couple minutes later I tried again but it didnt work and it was still in that same frozen position. Then I tried to turn it off but it wouldnt let me. Then all of a sudden the screen just turned white and it has been like that for about an hour now. Maybe even a little longer. It won’t let me turn the phone off or restart it either. And I hope you won’t say I have to get a new phone unless there is a way I can somehow transfer ALL of the information that is on my phone to the new one. So please help!