IntelliTechs ยท Oct 27, 2026
With the lock on, anyone who picks up your unlocked phone still needs your face or fingerprint to open WhatsApp. It takes under a minute to set up, and chat lock covers the conversations you want hidden for good.
If Face ID or Touch ID fails several times, the app falls back to your iPhone passcode, according to Pocket-lint.
If you don't see the option, your phone probably has no fingerprint reader, or no fingerprint is enrolled in Android's own settings.
The lock only guards opening the app. While it's on, you can still answer calls and reply to messages from notifications.
For a handful of private conversations, use chat lock. Press and hold the chat in your list (on Android, the three-dot menu has the option too) and choose Lock chat.
An app lock protects the phone, not the account.
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