This protective film is very difficult to attach. There were two in the package. When I installed the first one, it had a lot of bubbles. Some left after a day, but most stayed. First removed and second installed. This time there were fewer blisters and they all went away in one day. After a few days, however, the corners of the protective film began to lift. I am returning this product and will receive a different brand. I think you get what you pay for.
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