App Lock is one of the MIUI security features that allows you to lock apps with a password, pattern or fingerprint. When enabled, access to certain apps is prohibited unless the correct pin, pattern, ...
To lock WhatsApp on Android, launch the app, tap the three-dot menu, navigate to Settings > Privacy > App Lock, and turn on "Unlock With Biometric." To lock WhatsApp ...
Aside from lock screen and biometrics security, Xiaomi and Redmi smartphones also have a dedicated feature for locking apps. The feature is called app lock. Enabling app lock is recommended to prevent ...