I received an email linking me to a you tube tutorial on how to correctly fit this high quality screen protector. Also comes in a rigid box
My samsung Galaxy S8 premium tempered glass screen protector came beautifully packed with instructions and application sqiggy. Unfortunately try as I might I failed to get it into position without trapping air bubbles between it and my mobile screen. I therefore abandoned the task and decided to live without a screen protector and on reflection I think I did the right thing. My S8 screen does not show finger marks and I believe the image quality without a screen protector is better. Also advice on the net suggests screen protectors are not required on modern phones.