Hi, I haven’t had your product long enough to assess its true purpose. I’ll know soon. :) I only gave a 4 because of your installation instructions which are very poor. They do not show for the iPad Air version that I have, no indication to help you decide which section that is. I had a very hard time getting rid of the bubbles until I tried wrapping a glass cleaner cloth around a credit card. Now that worked great. You might want to suggest this method instead of the finger press method that you currently show. You have no idea how frustrating it was and how close I came to tossing the protector in the garbage!