Hi, @dylanrk111. I'm sure you'll get the Biometrics working as you'd expect very soon. Have you had a look at the tips provided in the guide below?:
Please let me know if this helps.
@PaulM1 Hello, I already tried all of that solutions. For example if I Clear my cache partition, Fingerprint working for few hours. after that few hour same problem coming back.
@dylanrk111: If you choose biometrics recognition, which includes using Fingerprints or Facial recognition to unlock your phone, the screen which requests your PIN, Pattern or Password may still appear instead of Fingerprints or Facial recognition in some cases according to the policy of Android OS.
This is an intended response for enhanced security of your device. Additionally, you can only use a PIN, Pattern or Password to unlock the screen after restarting the device or when you don’t use the device for more than 24 hours.
@AndrewL I checked this. But this one also not related to this. After restarting first I enter the pin and unlock. After around 1 hour again this error coming. In that times If I use "Check added fingerprints" option It shows nothing.