First, clean your screen with a microfiber cloth to remove any dirt or smudges. Second, carefully align the protector with your screen. Third, gently smooth out any bubbles that appear using a squeegee or your finger. If you're having trouble, try removing the protector and starting over. Also, if you're not confident in your ability to install the protector yourself, you can often have it done professionally at a phone repair shop. You should offer to pay for this, but in our experience, they'll usually offer to do it for free to keep your business.