Glass screen protectors are used to protect cell phone screens from damage. They are made fromtempered glass and have a high strength. Three models of glass screen protectors are available for No. 1 brand cell phone models. The fitting method is scraping. These screen protectors are the best way to protect your cell phones. Provide glass screen protectors for models such as No.1 S4,No.1 W9,No.1 S3.