Click here for more information The application process takes patience and attention to the directions and details on the install guide. Basically it uses the same method as professional car window tinters: You dampen the invisible shield on both sides (not the phone screen!) and then position the screen protector onto the Thunderbolt screen. Lightly dab extra moisture from the edges of the screen and use the included squeegee to adhere the protector and remove any bubbles by moving the squeegee from the center to the edges. Dab dry the protector and make any minor adjustments to move the protector so that it lines up with the screen perfectly. The invisible shield will adhere to the screen and is very difficult to remove without the solution provided, which means the shield will not detach from the phone under almost any circumstances. It is so strong it is extremely difficult to scratch (even, say with a key, unless you seriously want to break your screen). The protector comes with a lifetime replacement warranty if it EVER gets scratched or scuffed, which is not easy to do. Smudges from your fingers do not show up on the protector (unless you have seriously greasy fingers). I was surprised that after applying the invisible shield, the screen actually seemed to appear better somehow, perhaps better contrast for a reason that escapes me, but it is a welcome enhancement. If you don't mind taking care during the one-time installation of this shield on your Thunderbolt, I would highly recommend it because you will probably never need to remove it, although you can if you so desire. I give it five out of five stars! ZAGG HTCMOCS invisibleSHIELD for HTC ThunderBolt (Screen) - Skin - Retail Packaging - Clear - Thunderbolt Screen Protector
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