A screen protector is a sheet of clear plastic you adhere to your smartphone's screen. It can be cut to fix the exact shape of your device along with holes for buttons and speaker, so you can buy different screen protectors for different devices.
Using screen protectors is a great way to keep your mobile device scree free of xsratches and cracks. That's why lots of people will buy their device a protector as long as they recieve the phones, or even in advance so they can protect their phoens when take it out of the box. But just because protectors are meant to be replaced and not expensive doesn’t mean you need to put a new one on every time it gets dirty. It doesn’t take any special equipment or chemicals to clean your screen protector, just a soft cloth and a bit of care.
Much like cleaning the bare screen itself, you want to avoid scratching the screen protector so you don’t have to replace it unnecessarily. Using a soft cotton or microfiber cloth, gently rub in a circular direction until the fingerprints have been removed. A cotton T-shirt works in a pinch. If you encounter a particularly stubborn residue that the dry cloth cannot remove, lightly moisten the cloth with plain water and repeat. Then use the dry portion of the cloth to remove the excess moisture. Do not spray water directly on the device itself and take care to avoid getting water in the ports, buttons and openings for speakers or microphones.
There are literally hundreds of screen protectors available and while you can buy many of them for pennies, this guide has chosen to evaluate the key brands and the best protectors, not the cheapest (of course, I should say you can buy some cheap and high quality products from a realiable provider). Keep in mind the fact that your device is probably worth several hundred dollars (or pounds or euros), therefore money spent on a quality protector is a good investment.