Realme
Delete Face Data auf Realme
Face Unlock on Realme phones relies on a face model that Realme UI stores locally under the biometric security settings. This model stays saved even if you stop using Face Unlock as your main screen lock, which is why the option keeps showing up until it is actively removed.
To delete it, go to Settings ➔ Password & biometrics ➔ Face ➔ Delete ➔ Delete to confirm. Realme UI asks for your Pattern, PIN or Password before the face data is erased, since biometric changes always require the backup unlock method for verification.
Once deleted, the phone falls back to whichever unlock method you set up (Pattern, PIN or Password) and Face Unlock disappears from the lock screen options until a new face is registered.
If Face Unlock feels unreliable but you still want to use it, re-registering the face under the same menu is often a better fix than deleting it outright. Deleting the data only makes sense when facial recognition should stop being an unlock option entirely.