Samsung Galaxy m21

[SNI92]

Why sometime finger print scanner not works?

[chitti1998]

try to clear the fingerprints Registered and install again. some times it wont recognize because if the mobile is in sleep mode for long time. for me it happens when I keep my mobile sleep for long time like for 5 to 6 hrs without using. after unlock the device with password or pattern then it works as usual.

[SNI92]

ok I will try!

thanks

[chitti1998 · Accepted solution]

if its helpful please accept the solution of 3dots right to my name. thanks.

[Ehsank · Accepted solution]

bro register again but with all sides
and add 2-3 fingerprint simultaneously for better result

[SNI92]

thanks brother

[Ehsank]

thank you so much brother
to accept as solution without being request

[SNI92]

I was really good solution and best thing is your reply. so much fast.

[Sidhabhi · Accepted solution]

First go for good quality screen protector(if you are using any)..

Now, while registering fingerprints, cover fingerprint scanner region properly..from all sides or you can say angles..try to use index finger..

try it..and don't use hard toughened glass protector

[SNI92]

thanks brother