What to do when Samsung phone is not recognizing fingerprints

Your phone’s fingerprint sensor provides a convenient and secure way to unlock your phone and keeps your personal information safe. If you are having trouble using your fingerprint sensor there are a few things to consider. 

• Samsung cannot guarantee the compatibility with third party products because the fingerprint performance may be affected depending on thickness and structure of protection films or screen protectors.
• You may not be able to register or scan your fingerprints if you use a screen cover with a bumped or dotted pattern including dome glass, toughened glass cover, protective cover, third party’s protective film or thick protective films in addition to silicone cover.
• If the general protective film that you are using is not transparent and has a specific pattern (dot, grid, etc.), we recommend removing it regardless of its form to enhance security. 

• If protective film/screen protector is dirty or scratched, please replace to new one and we recommend registering your fingerprint again for better fingerprint recognition rate after replacing protective film.
• Ensure that the fingerprint recognition sensor area at the bottom center of the screen and your fingers are clean and dry.
• Attaching thick protective films or glass type protective films may also decrease fingerprint recognition rate. 

• The device may not recognize fingerprints that are affected by wrinkles or scars.
• The device may not recognize fingerprints from small or thin fingers.
• The device may not recognize fingerprints from too dry fingers, especially after wake-up in the morning, or at outside place in Winter. In this case, moisten your fingers using hand cream, etc., and try again.
• The device may not recognize fingerprint in too cold or too hot places.
• The device may not recognize fingerprints from wet fingers.