When i turn off my galaxy tab 4 why does it unlock by itself?

[AC Question]

I pressed power button, and i hear lock sound. Suddenly i hear it unlock even though the screen is off! How do i fix it? Is it malfunctioning? Is it messed up? I have lots of questions i cant type them.

 

[nahoku]

Help me understand this... You're worried that your tablet is unlocked while it's off? What happens when you turn it back on? Is the table locked again?