How to remove plastic protection cover from display face?

Question

I have a plastic protection cover over my display panel that is suppose to be removed after purchase by just pealing it off, well i didn't now 5 years later display face looks bad and plastic won't peel off in all places to show like new display.

Answer 1

Maybe its stuck. You should have taken it off right after you bought it.

Answer 2

Use putty knife blade with out the holder, same as removing paint from windows  

Answer 3

heat it with a hair dryer and then peel it off