To avoid costly repairs, replace or install a Samsung Galaxy S21 screen protector following these steps.
Remove the phone case.
Ensure the work area is static-free to prevent damage.
Place the phone face-up on a flat, clean surface.
Use a lint-free cotton swab or microfiber cloth dampened with 50/50 isopropyl alcohol to clean the phone screen.
Use a microfiber cloth to wipe and dry the phone screen.
Remove any dust particles from the phone screen using sticker or tape.
Remove the protective layer from the screen protector.
Allow the remaining part of the screen protector to drop onto the screen, aligning it directly with the phone's display.
Position the screen protector on the screen with its center aligned to the phone's middle.
Apply firm pressure to the screen protector using the scraper/card, then slowly slide it toward the nearest edge.
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