Why does my phone turn off when i open camera?

[anon(9931068)]

I have a samsung galaxy s3 and it's using jellybean 4.2.2.
I have had it for 2 years. Just a week ago i was using snapchat and out of no where my phone shut off randomly. I tried using my stock camera and it did the same thing. I looked up information, tried every thing. I reset my device and done everything. Is it the battery?

Please help!

 

[spagman]

It could be the battery.. If not the battery it could be the camera module...
You just have to try the battery first and hope that fixes it.