Defects caused by third party protective films on your Samsung Galaxy devices

If your Galaxy device screen colors look unusual, lines appear on the display, or touch and fingerprint recognition do not work properly, the issue may be caused by an unauthorized third-party protective film. Some third-party tempered glass or protective films may affect display quality, touch performance, and other device functions.
A hand holding a Galaxy phone with distorted colors and lines running across the screen.
A hand holding a Galaxy phone with distorted colors and lines running across the screen.

Defects caused by third party protective films on your Samsung Galaxy devices

Problems that may occur when using unauthorized third-party protective films

Some unauthorized third-party protective films may have differences in material quality or manufacturing, which can cause the following issues.

Touch or fingerprint recognition might not work properly

Fingerprint sensor failing to recognize a finger.

Stains, discoloration, or uneven coating on the protective film
A screen with unusual or discolored colors.
Horizontal lines might appear on the screen
A screen display showing horizontal lines.
Vertical lines might appear on the screen
A screen display showing vertical lines.
Vertical stripes might appear under light
Vertical stripe patterns visible on a screen under light reflection.
Foreign matter or dust might appear at the edge of the screen protector
Foreign matter or dust at the edge of the screen protector.
The protective film might not attach or remove properly
A protective film with bubbles or lifting edges on a phone screen.
The protective film might become damaged quickly
A protective film with visible scratches and cracks.
The protective film size might not fit properly
A protective film that does not properly align with the device edges.
Oil stains or rainbow-like patterns might appear on the screen
Oil stains and rainbow patterns visible on a protective film.
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How to identify Samsung-certified accessories

Samsung operates the SMAPP (Samsung Mobile Accessory Partnership Program) to support compatible accessories from partner companies.

The Designed for Samsung logo.

Accessories that pass Samsung’s quality verification process receive the Designed for Samsung logo, which may appear on the product or packaging.

Note
  • SMAPP is Samsung’s design and quality certification program for mobile accessories.
  • Damage or malfunction caused by uncertified accessories may require repair and may not be covered under Samsung quality assurance.
  • For safe and reliable use, Samsung recommends using compatible Samsung accessories or Samsung-certified accessories.
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