I bought this for my girlfriend and she used it for a while before she needed me to inquire about the lifetime warranty. The screen protector was badly cracked and we needed to send it back immediately. Unlike other brands, where if the screen protector breaks you can still use your phone to take calls: This screen protector seems to be made in a way where when it breaks it produces sharp shards of glass that are held to the screen of your phone. These shards of glass are very dangerous because they'll scratch your face or leave glass poking in your cheek when you hold your phone up to your face to talk on the phone.
Anyway, I sent in for the lifetime warranty and BEWARE the warranty does not get you a free replacement screen protector! You have to pay 15 dollars to get a screen replacement! For 15 dollars you can get a 3 pack of comparable screen protectors on Amazon. The replacement screen protector came in and in about a week of applying it her screen protector it is broken again. Same thing as last time: screen protector is completely broken and sharp shards of glass near the edges where they'll easily cut you or get stuck in your face when you hold your phone up to your face to take a call.
Very dangerous. Don't buy.