My Galaxy 4 keeps turning on and off by itself and the battery gets pretty warm

Question

I have a Galaxy S4 and it keeps turning on and off by itself.  As well the battery usage is pretty quick and the battery keeps getting pretty warm.  Any thoughts.

Answer 1

Thanks to all of you for your input. Fortunately, for me, the phone was still under warranty so there's no expense to me.  However, during the course of my conversation with the Tier 2 tech, it was mentioned that a recent update MAY have been the problem.  But after doing a refresh, the problem continued with the phone turning on and off all by itself.  That was the whole problem.  But, the battery life went down dramatically within a few hours after it had been charged all night.  I was told that this was due to the phone cycling and off.  As well, even the safe mode didn't solve the problem that would allow me to use the phone without being able to use the apps.  I had pulled the battery to let it set for a while but with no success.  I also pulled the SIM card before they refreshed the update but, still no go.  Anyhow, the end result was that the Tech that I was talking to then transferred me to another Tech -- I guess someone a little higher up -- and I was then informed that they were going to send me another phone.  I don't recall that anyone placed the blame on Samsung or Verizon.  So, there ya go.  Thanks again.