My old iphones screen is white?

This happened a long time ago but I just realized like all my pictures and contacts were on there, so I plugged it in the computer and it said couldn't read iphone because there's a passcode, or something. And like the screen doesn't work but I can play music by using voice control, does this mean I can't get my stuff back unless I go get it fixed? Because if so, its not worth it. I already got an iphone 4s and I don't wanna waste money but yea thanks

Press and hold the lock and the home button for atleast 5 minutes it will tell you to connect it to the computer

then connect it and you should get it back