Iphone reboots when i try to use camera

Question

here it is. explaining this is hard............
i try to use camera app/ phone reboots everytime !!!!!!!
when phone goes into "auto-lock"/ phone turns completely off (unless charging !)
when i cut off (tap top button once) phone turns completely off after like 15 seconds, (unless charging !) if i hit top button or home button within 15 seconds it does not turn completely off. Everything else works as it should.
***????? right??????
i've had to turn auto-lock to "never" in order to use phone which causes short battery life. Please help this frigging ***** !!!!!!!!!!

Answer 1

Have you tried reset (per the manual)?
Restore (same manual)?
http://manuals.info.apple.com/enUS/iPhone_UserGuide.pdf
Page 46:
"If something isn’t working right, restarting, force quitting an application, or resetting
iPhone will likely solve the problem.
Restart iPhone: Press and hold the Sleep/Wake button until the red slider appears.
Slide your finger across the slider to turn off iPhone. To turn iPhone back on, press and
hold the Sleep/Wake until the Apple logo appears.
If you can’t turn off iPhone or if the problem continues, you may need to reset. A reset
should be done only if turning iPhone off and on doesn’t resolve the problem.
Force quit an application: Press and hold the Sleep/Wake button on top of iPhone
for a few seconds until a red slider appears, and then press and hold the Home button
until the application quits.
Reset iPhone: Press and hold the Sleep/Wake button and the Home button at the
same time for at least ten seconds, until the Apple logo appears.
For more troubleshooting suggestions, see Appendix A, “Troubleshooting,” on
page 190.
"