Where do i get the iphone 4 screen protector, how much is it and how do i put it on?

Is it a good idea to buy one?

I recommend you get the ZAGG screen protectors they are AMAZING it's not like any other screen protector. It feels almost jelly like. Those other screen protectors are plain old plastic and can actually scratch the screen protector it self. And ZAGG comes with a lifetime warranty it also comes with a squeegee and a spray. And if you do get the ZAGG this is how you put it on first, wash your hands you don't want anything dirty to get on your screen protector. Second, open the package take the screen protector and lay it down so the sticky part is facing up. Third, place you phone on a clean flat surface. Spray the substance on the screen protector (The sticky part) lastly, carefully place the screen protector on to your phone put it on the correct area. Use the squeegee to get any existing bubbles out.