

To require Face ID to unlock WhatsApp, tap Settings -> Account -> Privacy -> Screen Lock and toggle on the Require Face ID switch. When enabled, users need to use Face ID to unlock the WhatsApp app, but they can still reply to messages from notifications and answer calls when the app is locked.

The Facebook-owned platform has been testing the feature for iPhone X and newer devices in its TestFlight beta releases for some weeks now, but version 2.19.20 of WhatsApp, now on the App Store, makes Face ID available for all users with supporting iPhones.

WhatsApp has enabled a new Face ID authentication option for iPhones that support the feature, in the latest update to the messenger app (via WABetaInfo).
