iPhone 3GS camera stuck on closed shutter

Hi! I have a really important question:

How do I fix my iPhone 3GS camera?

Recentally, it stopped working.. Whenever I open the regular camera, it won't fully open.

It just stays locked on the closed shutter.

The same thing happens when I switch it to video.

I've tried looking up solutions and deleting other camera using apps.

Nothing has worked

It was just all of a sudden too.

I was taking a picture, it froze, and hasn't worked since. (happened on Monday)

Even the newest update hasn't helped.

Any suggestions?

Please and thank you! <3

(I've read that some people did try to restore theirs and it didn't work, so I'm very hesitant to do so..)