Why can't my Galaxy Core Prime capture a screenshot?

[AC Question]

Galaxy Core Prime cannot capture screenshot

I've tried to press and hold power button with home button and volume down for many time but it does not work.
When I press and hold power button with home button, Google search will start instead.

 

[B. Diddy]

Re: Galaxy Core Prime cannot capture screenshot

Welcome to Android Central! Make sure you're pressing both Home and Power at the exact same time, and hold them down for about half a second. It can be tricky on some phones.