Screen protectors safeguard the most vulnerable part of a smartphone: the display. Available in materials like tempered glass PET film and hydrogel they defend against scratches smudges cracks and accidental damage. Tempered glass protectors are the most popular offering hardness ratings that resist sharp objects and impacts while hydrogel films provide flexible self-healing properties for curved displays. Anti-glare and matte protectors improve visibility under sunlight whereas privacy screen protectors prevent side-viewing ensuring confidentiality. Some models come with oleophobic coatings that resist fingerprints and smudges for clear visibility. Installing a screen protector is an affordable preventive measure compared to costly screen replacements. They are available for all smartphone brands and models often with edge-to-edge coverage. Advanced versions also support full touch sensitivity high transparency and compatibility with in-display fingerprint scanners. In addition to protection screen guards help maintain device resale value by keeping displays intact and scratch-free.