When a phone or tablet is stored or transported in contact with a physical keyboard, visible “keyboard imprints” can appear on the screen. These marks are usually caused by pressure, skin oils, and dust. Using alcohol with a cleanroom wipe is a safe and effective way to remove them without damaging the screen.
1. Tools Needed
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Microfiber cleanroom wipe
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70% isopropyl alcohol (IPA) or alcohol-based screen cleaner
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Soft lighting for clear visibility
2. Cleaning Steps
① Lightly spray alcohol onto the cleanroom wipe—do not spray directly onto the screen.
② Gently wipe the screen in a circular motion over the imprints.
③ For stubborn marks, repeat the process until the screen is clear.
④ Use a dry cleanroom wipe to remove any remaining moisture.
⑤ Let the screen air dry for a few minutes before using the device.
3. Precautions
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Use 70% alcohol to avoid damaging screen coatings.
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Prevent alcohol from seeping into openings like speaker grills or charging ports.
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Avoid using tissues or regular cloths to prevent scratches.