Galaxy S5 Gap in back case.

[AC Question]

There is a gap in the back case of my Galaxy S5 under the power button.
Here is an image of it: postimg(.)org/image/k5z4d0u3b/
I wonder why that is there and how I can fix it.

 

[B. Diddy]

Welcome to Android Central! It looks like a place for you to use your fingernail to pry off the back cover.