Note 20 has ultrasonic sensor. So any good quality screen protector should work... . Optical sensor causes problems with a few types of screen protector
Ultrasonic fp sensor don't work with regular tempered glass (bcoz there are very very small gaps between screen and screen protector)... It needs specially designed tempered glass which has some different material over the fp sensor area...
I'm using a film protector from Gadgetshieldz for almost a year because this protector can self-heal the scratches that occur on it and I saw the scratches disappear within a few minutes! Also, this protector is good with touch and fingerprint scanning, I had no issues with it till now. I like this protector and I recommend this to you 😁 https://www.gadgetshieldz.com/galaxy-note-20-screen-protectors-guards.html
Thank you for sharing your concern. We acknowledge your query and apologize for the same. And please follow the easy troubleshooting steps which might help to solve the issue. When you scan your fingerprints on the device, be aware of the following conditions that may affect the feature’s performance:
• The fingerprint recognition sensor recognizes fingerprints. Ensure that the fingerprint recognition sensor is not scratched or damaged by metal objects, such as coins, keys, and necklaces.
• The screen protector supplied with the device may cause the fingerprint recognition sensor to malfunction. Remove the screen protector to improve fingerprint sensitivity.
• Ensure that the fingerprint recognition area and your fingers are clean and dry.
• The device may not recognize fingerprints that are affected by wrinkles or scars.
• The device may not recognize fingerprints from small or thin fingers.
• If you bend your finger or use a fingertip, the device may not recognize your fingerprints. Make sure to cover the entire fingerprint recognition sensor with your finger.
• To improve recognition performance, register fingerprints of the hand used most often to perform tasks on the device.
• In dry environments, static electricity can build up in the device. Avoid using this feature in dry environments or before using the feature, discharge static electricity by touching a metal object. Note: You should make sure to use the highest central parts of fingerprint or the most curved part of fingerprint when you register or scan fingerprint
In case the issue still occurs. Please register your concern in Samsung Members Application (Open Samsung Members Application > Get help > Send Feedback > Error report).
Thank you for writing to us. Warm Regards, Samsung Customer Support.
