1 - That it protects the screen (well so far, I have good ...)
2 - Ensure that it is easy to install even when, like me, you have two left hands ...
simply clean the screen before the installation, remove the first cache, ask protection on the screen, chase all the bubbles with the included cloth and then carefully remove the 2nd protection.
I realized that on 2 phones and this was faultless ...
So I take the ease of installation ...
no reflections thereafter. This protection is forgotten when looking at the screen = perfect !!!