The product was delivered with instructions. This confused me personally a little. Since this is included with the product is a set of 3, I thought - okay Just looking machen- and work right away. With a little fine feeling everyone gets this film to be Xperia Z1 Compact. It is important to make sure that the front and back do not contain any dust particles, as small bubbles can arise. I would recommend this film fully, because the quality and the true value for money. I prefer to give you 3 more than annoy me of a cheap film which I have 100 times reapply.