The video uses the popular ASMR-style installation format, which is highly satisfying to watch and provides clear visual proof of the product's quality and the professional service provided.
Summary
A technician demonstrates the installation process of a UV liquid tempered glass screen protector on a Vivo V40 smartphone. The process involves applying liquid adhesive, placing the glass, and curing it with a UV light.
V40 UV glass (a screen protector) ACTS: it is being applied to a phone screen, liquid adhesive is used, and it is cured under a UV light. Removing it would change the video as it is the subject of the demonstration. Apple World (the creator's shop) merely APPEARS as the account name and source of the service.