look at the picture this happened after i dropped the tablet on cement several times and dropped a solid metal juice bottle on it. The screen of my tablet survived without a trace. I was afraid to take it off, scared of what I would find underneath, I was sure the bottle closed the deal and I managed to kill the other device. I was very surprised. The screen is still in its original form. Even on the edges where my kitten chewed, the sharp baby teeth didn't leave any marks, instead breaking off the protective film. Installation is very easy, they even have a video to help you with it. It didn't take me long to apply it, maybe 30 minutes because I was very careful with the dust, a good dust remover is included. The air bubble remover is a bit flimsy and I used my driver's license instead, but it can be used. I just didn't have the patience. There is a lifetime guarantee against breakage or scratches. I don't know what you mean by lifespan, I've only had it for 4 months (I'm very strong at electronics). I had a little trouble getting them to comply, my order number kept showing as invalid but I sent a screenshot of the order and photos of the box and they sent a replacement straight away.
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