samsung s4 screen fault

[AC Question]

My phone is acting weird.
It randomny goes blank on the screen.
I have to press the side button on /off to
get it to come back on.
when i sit it down again and pick it up
it goes blank.
i dont know how to fix it,can someone help?

 

[belodion]

Do you mean that it has to go through the rebooting process, as if you'd powered off the phone? If so, there may be a bad internal connection or a poor battery connection or a faulty power switch.