Phone: xiaomi 3s prime with android 6 and Miui 8.

I use finger print lock for apps.
When open such a apps, screen shows " couldn't read finger print. Please enter your pattern" But i forgot my alternate pattern password. The interesting point is am able to unlock my phone using finger print but above problem occur only with app lock.

I tried ##6484## and tested my finger print sensor. Its working fine.

  • For one app or for all apps?
    – i--
    Commented Mar 20, 2017 at 15:57
  • @SagarV Thnx for Comments. Problem with all apps which i locked using app lock. Finally resolved. Commented Mar 21, 2017 at 4:08

1 Answer 1


This is settings issue where am using finger print lock for apps and messed with some settings .

Steps which resolved:

1)SETTINGS > > lock screen & passwords >> screen lock & finger print

2) Draw your screen lock pattern

3) switch on “app lock” under “apply finger print option to ”

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