The first and second attempts failed through no fault of the screen protector. My house is dusty and I have cats which make the problem worse. Also, I'm a bad housewife. I acknowledge it. So when I first tried to install I had dust and bubbles under the screen. Not a terrible amount, but I wanted perfection. The second try was better but without the cigar. I contacted the seller and within a few days the item was replaced free of charge for me. That speaks for the honesty of the seller. As they say, the third time is nice. What have I done differently? I installed a screen protector in a little-used bathroom and ran the air purifier for 24 hours prior to installation. I shower with hot water for 10 minutes and then let the moisture soak in. I've been told that humidity traps dust particles and purifies the air. I wore surgical gloves. I used a paint tap to reinforce the hinges, although the included hinges are adequate. I used a commercial screen cleaning liquid, although the supplied wet wipe will also work. I worked slowly and carefully. Voila, the installation went perfectly. I am very satisfied with this screen protector. Does not reduce touch sensitivity. It doesn't interfere with my business. It's crystal clear. There's glare, but that's a small price to pay. I recommend this product. You can't go wrong. And when you do so through no fault of the defender, you're backed by a guarantee that's hard to beat.
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