Why is my galaxy s4 shutting off

[AC Question]

I put my phone in my pocket it shuts off. I sit it on the table and my phone turns off. I know my screen is bad but I am wondering if a wire has come loose or not.

 

[belodion]

A failing battery? A faulty power switch? A poor battery connection?

 

[Golfdriver97]

Welcome to the forums. Take the battery out and on a smooth flat surface, try to spin it. If it does, it's bulged and needs to be replaced.