A ppf can sometimes become scratched, especially if it's not of high quality. While a small scratch might not seem like a big deal, it could actually cause significant damage to your device. The ppf acts as a barrier between your device and the outside world, and a scratch can provide an opening for dirt, dust, and other particles to get inside. Once these particles have made their way into your device, they can cause all sorts of problems, including short circuits, data loss, and even physical damage to the components. In addition, a scratch can also weaken the ppf itself, making it more likely to break in the future. For these reasons, it's important to be careful with your ppf and to avoid scratching it. If you do end up with a scratch, there are special ppf repair kits that can help to fix the problem.