Tempered Glass
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Pros: Best drop protection (absorbs impact), feels exactly like real screen, oleophobic coating resists fingerprints.
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Cons: Thicker (0.3mm), can crack and need replacement, may interfere with ultrasonic fingerprint sensors.
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Best for: Most users, especially those prone to drops.
Film (TPU/PET / hydrogel)
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Pros: Ultra-thin, self-healing (minor scratches disappear), works perfectly with ultrasonic fingerprint sensors, very cheap.
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Cons: Less drop protection, can yellow over time (6–12 months), feels more grippy (less smooth than glass).
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Best for: Curved screens (where glass won't adhere well) or phones with finicky fingerprint sensors.
Privacy Screen Protector
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Pros: Blocks side views (darkens beyond 30–45 degrees) – good for public transport or open offices.
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Cons: Reduces screen brightness significantly (30–50%), limited comfortable viewing angles, can cause eye strain.
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Best for: Commuters, office workers, or anyone handling sensitive data in public.