The privacy effect works by limiting the viewing angle of your screen. Its performance can vary depending on viewing angle, screen brightness, and surrounding lighting conditions.

For optimal results, keep the screen facing you directly and adjust the brightness to around 60%. Moderate ambient lighting also helps maintain a clear view for you while restricting side views.

Tempered-glass screen protectors are designed to provide strong protection. To keep them in optimal condition, proper installation and everyday care are important.

During installation or removal, handle the protector with care, especially when peeling off the film, removing air bubbles, or lifting a used protector.

In daily use, keep your phone away from hard or sharp objects such as keys, and avoid strong impacts on the edges or applying excessive pressure.

After installing the screen protector, re-register Face ID in your phone settings for the best results.

During setup, hold your phone about 30–50 cm (12–20 in) from your face, look directly at the screen, and make sure the screen brightness is set appropriately while completing the scan

If the screen protector you ordered doesn't fit your device, please provide your device model name or model number. We'll send you the correct size at no additional cost, and no return is required.

To find your device model on a Samsung phone, go to Settings > About phone > Model name / Model number.

For optimal unlock performance, we recommend re-registering your fingerprint and adjusting the settings after installation. Please follow the steps below:

1. After applying the screen protector, unlock your phone with your passcode and register your fingerprint again.
2. During registration, place your finger at different angles and positions, and consider registering multiple fingerprints to improve accuracy.
3. Turn on Touch sensitivity (Settings > Display).
4. When unlocking, place your finger flat on the sensor and hold briefly without tilting.