Devia 0.19mm UV Light-Curing Film for Smartphone Screens – Made of PET #13 #10 #13 #10. A technologically advanced 0.19mm thick, light-curing protective film made of high-quality PET. Designed for flat and curved smartphone screens, the film requires a vacuum machine with a 30W UV lamp (sold separately) to apply. For proper curing, turn off the smartphone first. After 3 minutes, a 6H hardness is achieved, and the backing layer of the film remains soft to protect the screen from shattering, while also maintaining crystal clarity and excellent touch sensitivity.