a) Make sure there are no stains such as water or sweat on the fingerprint sensor. If there are, wipe the surface and try again.
b) Try to re-enter your fingerprint to your device by accessing “Menu”->“Settings”->“Security & privacy”-> “Fingerprint recognition”->confirm your Password security lock->“Add fingerprint”.
c) Try to reset or update your device.
If the previously described options do not help, you can contact our hotline or repair center to get more professional technical assistance. Find the hotline or repair center information from the official website or APP “Support Center”.