Zagg is a good company and stands behind their products (pretty much), but if you buy a Zagg shield, let Zagg put it on for you. I paid Best Buy to install this shield on my iPhone, but each of the three times they tried, they failed to get a clean contact. Because the shield is given to static electricity, dust from the air was always attracted to, and caught between, the phone screen and this shield. Since digital cameras came about, I've learned a thing or two about screen shields on my digital cameras, and I've come to realize that the best screen shields are the ones made of glass. So, after three failed attempts with the Zagg screen, I bought a glass shield for my iPhone, and it went on perfectly the first time. Absolutely no dust, fingerprints, or air bubbles. Do yourself a favor: don't waste your time or money on flexible shields; get a tempered GLASS shield for your phone, digital camera, tablet etc. Saves a lot of aggravation.