For cons, I have had some air bubbles under the two screens, but I managed to make it go away easily by the "slip".
I removed a star product, who used a corner of the little piece of cardboard provided for from a very small bubble that did not deign to remove because the use of this piece of cardboard, and more that of one corner of it to drag the bubbles, scratch the protective film! I created 3 scratches on the upper film (for thicker and not treated against scratches unlike down) by doing this.
So great product, and if you pay attention to what I told you, this is a perfect product.