The screen protector is thick but not too bulky. If you watch a video about installing screen protectors, you'll see that they're all pretty much the same. Just make sure you completely clean and dry your phone screen before installing the screen protector. As for the bubbles, I had a few, but I lifted the edge of the protective sheet and pushed them out. Finally the size is perfect. For those who say it's too small, it shouldn't go all the way to the brim. Literally half a centimeter on each side of the protection that opens the screen. This space is occupied by each protective case you add. All in all I would recommend this product.
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