open dialing pad and dial *#0*#then open a menu select sensor then fingerprint sensor and check fingerprint sensor after that press back and select sensor hub and wait,After all complete then check the sensor its working normally or not

try smart switch for update through laptop or pc

bro i think android 10 update rolling out very soon bcz recently Samsung pushed one update which update was similar yo vietnam after this update they get android 10so i say

in vietnam