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I have a Samsung Galaxy A53 and I did a fingerprint on it. When there is no application opened and it enters the lock screen, I don't see the option to put my finger to open it, and I have to write down the PIN code that I chose.

But if I'm opening a certain application, it doesn't matter which one, WhatsApp or something, and the device goes to the lock screen through the button on the side, or if a minute passes, the fingerprint icon appears, and if I put my finger on it, it opens.

I searched in the settings and Google and didn't find anything about it.

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  • It is more likely that you need to enter the PIN because the device has performed a reboot (and for that reason no app is running).
    – Robert
    Commented Jan 3 at 7:57
  • @Robert if an apps are running and im doing CLEAR ALL , and then im going to lockscreen the fingerprint its not showing up
    – mikuzan
    Commented Jan 3 at 8:00
  • Depending on circumstances, Android may force the user to use PIN after several hours.
    – Andrew T.
    Commented Jan 3 at 16:28

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