I have an iPhone 4 if I'm correct, I'm having really bad camera issues; when I open the camera app the shutter appears to be closed and the phone reboots. Any ideas as to what it is, how to fix it, or what I should check? Could it be a virus?
Very good advice.You can try doing a hard reset first. Won't remove data or anything. It's just a complete shutdown of the device.
Press and hold both the home a s sleep button together. When you see the slide to power off slider, KEEP holding them. When you see the Apple logo, then release both. It will take a bit longer for the phone to come back to a usable state ( maybe a minute or two )
See if that helps before trying a restore.