Why can't I figure out a cell phone?

I can't get the battery cover off!  The instructions look simple enough, don't they?  

It says "press the release button on the top of your phone and lift the cover away."  
There's the button, and when I press, it gives; but I can't BUDGE that battery cover.  The picture would seem to indicate the battery cover slides down, while the instructions say to "lift" it.  I've tried both methods to no avail. 
One of these days I'm just going to give up on cell phones.    
My grandson is going to stop by on his way home tonight and help me out.