Xiaomi
Remove a Stored Fingerprint auf Xiaomi
Fingerprints on Xiaomi phones are managed inside Passwords & security, not in a separate biometrics app. MIUI groups every enrolled print under one list, so before deleting anything it helps to scan through and identify which entry belongs to the finger you want gone.
MIUI requires your backup unlock method before it lets you remove a print. This is a deliberate security check: without it, anyone holding an unlocked phone could wipe fingerprint data and enroll their own instead.
The verified path is: Tap on Settings ➔ Tap on Passwords & security ➔ Tap on Fingerprint unlock ➔ Enter the current Pattern, PIN or Password ➔ Select a fingerprint ➔ Tap on Remove fingerprint ➔ Tap on OK.
Removing a fingerprint does not affect other unlock methods, apps that use biometric login, or Face Unlock if configured separately. If you plan to sell or hand over the device, remove every stored print and also check the Face Unlock section, since both can grant access independently.
If fingerprint unlock stopped working entirely and no prints appear in the list, the sensor itself may need a re-enrollment instead of a removal.