Question :

My fingerprint does not be recognized properly on device. What do I do for this?

Answer A :

As the security about fingerprint registration and authentication was enhanced, 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, 3�rd party�s protective film or thick protective films in addition to silicone cover.

When you scan your fingerprints on the device, be aware of the following conditions that may affect the feature�s performance:

• 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 when the fingerprint is not registered evenly or you use fingerprint of different area from the registered fingerprint.

• If protective film/screen protector is dirty or scratched, please replace to new one and we recommend to register your fingerprint again for better fingerprint recognition rate after replacing protective film.

• The device may not recognize fingerprints when the screen protector/protective film is not attached clearly and tightly on device screen.
• Air gap or foreign substances between protective film and screen may decrease the fingerprint recognition rate.
• If you remove the protective film or attach new thing, we recommend to re-register new fingerprint.
• If you bend your finger or use a fingertip, the device may not recognize your fingerprints.
• Press the screen so that your fingertip spreads over the wide surface of the fingerprint recognition area.
• If you take your finger off too fast, the device may not recognize your fingerprints.
• When attempting to recognize a fingerprint, keep your finger on the fingerprint recognition sensor area until the fingerprint recognition is completed with the wider part of the fingerprint icon.
• If you press your finger too hard, the device may not recognize your fingerprints.

Answer B :

To improve recognition performance, register fingerprints of the hand used most often to perform tasks on the device.

• Your device has a built-in fingerprint recognition sensor at the bottom center of the screen.
• Ensure that the screen protector or the touchscreen on the fingerprint recognition sensor area is not scratched or damaged by objects, such as coins, keys, pens, and necklaces.
• Ensure that the fingerprint recognition sensor area at the bottom center of the screen and your fingers are clean and dry
• 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.
• The device may not recognize fingerprints from too dry fingers.  Especially your fingers can be more drier on situations like following.  
•  When trying to use fingerprint after wake-up in the morning , When having more drier fingers than normal,
• When you�re at outside place on winter or in low humidity conditions at that time, we recommend to let your finger be moist properly by using hand cream and try again.
• The device may not recognize fingerprints from wet fingers.
• To improve recognition performance, register fingerprints of the hand used most often to perform tasks on the device.
• You should make sure to use the highest central part of fingerprint or the most curved part of fingerprint when you register or scan fingerprint.

Samsung is committed to improve fingerprint recognition rate continuously so always encourages users to keep software and apps updated to latest version.