Safari and Camera spontaneously shut down...help

I have an iPhone 4s. I do all the updates that are available, so I'm at the latest version of iOS available. Safari will open and let me use it, but it spontaneously shuts down frequently...to the point where I don't even use it now, its so irritating. Also the Camera was doing the same thing. I would hit the shutter button and it would shut down. Did that for awhile... couldn't get it to even work to take a picture in a text. Now it won't even open... hit the app and it starts to open and then shuts down. Anyone have similar issues or a solution?

Thanks!