With exception to folding phones, there are screen protectors designed to help protect the phone’s display from scratches, and cracks. The idea is the screen protector takes the blunt of the trauma that would otherwise damage your screen. You would then replace the screen protector rather than replacing the phone’s display. All screen protectors will sell in packs of 5 and an applicator bay will be sold for extra. This reduces the plastic waste issues. if you have a 3D printer, you would be able to download the file that will allow you to print out the applicator bay.