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A cell phone screen protector serves as an additional protective layer. Since it is easier to replace than a smartphone’s display, this removable film preserves the integrity of the screen by ensuring that there are no unsightly scuff marks on it. Besides the aesthetic benefits, protecting the display in this way guarantees a high resale value for the phone. Screen protectors for cell phones are available as plastic or tempered glass films. The plastic varieties usually use PET (polyethylene terephthalate) or TPU (thermoplastic polyurethane). While plastic screen protectors are thicker than tempered glass, they are also more affordable. However, tempered glass offers better protection and feels similar to a phone’s screen to touch. Finally, while plastic screen protectors offer basic protection against physical damage, tempered glass can provide additional features such as oleophobic coats that reduce smudges made by fingerprints. Before ordering a screen protector, first decide on the kind you want. There are four types of cell phone screen protectors: clear, anti-glare, privacy and mirror. Clear protectors are the most common types of this cell phone accessory. They are usually thin, smooth and fully transparent. When applied properly, clear screen protectors are almost invincible. They may come in packs containing single or multiple films. Single-film clear protectors usually boast heavy-duty builds while multi-film protectors are thinner, disposable and easily replaceable. Anti-glare screen protectors have matte finishes that diffuse light and reduce the brightness of highly reflective cell phone displays. This quality makes them ideal for those who regularly use their phones in direct sunlight. The anti-reflective coat of this type of screen protectors also hides smudges. After selecting a preferred type of screen protector and deciding between plastic and tempered glass varieties, there are other things to look out for such as selecting between universal and device-specific films. The former requires users to cut the protector to the right sizes for their cell phones while the latter comes pre-cut for specific devices.