These screen protectors a real bargain and come with a screen cleaning cloth to use prior to applying. They have the "remove this side first" before applying, then once you're happy with the application, "remove this side 2nd" and you're good to go. Only had on for a couple of days now but appears to be great -- hardly noticable, nice and clear, and touch screen works with fingers or stylus just great.
Another thing I like about these are they don't go to the edge of the phone. those that do can be tricky to get exactly positioned. As these leave 2 or 3mm around the edge, makes easier to apply. I located the bottom first around the home button, and that made it easy to then apply upwards uisng a credit card to flatten onto the screen. I applied my first one bubble free, but if you had issues with dust, there's 10 in the pack, so you can afford to waste one if you do pickup some dust spec that catches you out.
Very happy and not sure if I'd ever actually need 10 that comes in the pack. I guess time will tell.