One thing I never use is screen protector. I have used many different smartphones since 3GS/Nexus One era. Never use any screen protector. I believe they are a sort of snake oil in their advertisement of preventing scratches on your phone. I frequently see sellers demonstrating a screen protector by jabbing nail or keys on the phone with the protector, and then showing the damage on the protector and the pristine screen. Well, DUH! The screen is not pristine because of the protector, it's pristine because of the gorilla glass. Gorilla glass have hardness rating above steel, so obviously steel cannot scratch it.