The simplest way to repair phone scratches is to protect your phone from them in the first place, and a tempered glass screen protector is the best way to do that. Everytime you upgrade your phone, you should receive a new screen protector with it. Utilize toothpaste for the scratch. https://lorenzoaayur.blogpostie.com/56079154/5-simple-techniques-for-phone-glass-polishing-machine