WhatsApp Chat Lock: How to Lock Private Chats with Fingerprint

Handing your phone to a friend to show them a photo is normal — but nobody wants their private chats on display while they scroll. WhatsApp has a built-in feature for exactly this: Chat Lock. It locks any chat you choose behind your fingerprint (or face lock / phone PIN), moves it into a hidden "Locked chats" folder, and hides its message previews in notifications. Here's how to use it properly.

Chat bubbles with a padlock showing WhatsApp Chat Lock

How to lock a chat

  1. Long-press the chat you want to lock
  2. Tap Lock chat from the menu
  3. Confirm with your fingerprint (or your phone's screen lock)

Step-by-step visual: how to lock a WhatsApp chat
Done. That chat is now locked.

Where do locked chats go?

Locked chats disappear from your main chat list and move into a separate Locked chats folder. To open it, pull down on your chat list — the folder appears at the top. Tap it, verify your fingerprint, and your locked chats are there.

Illustration of the Locked chats folder on WhatsApp

How to unlock a chat

Changed your mind? Long-press the locked chat inside the Locked chats folder, tap Unlock chat, and confirm with your fingerprint. It moves back to your normal chat list.

A few things worth knowing

  • Notifications stay private too. Messages from locked chats show as "WhatsApp: 1 new message" instead of showing the sender's name and preview text.
  • Locked chats don't appear in search results until you unlock the folder.
  • Lock the whole app as well. Chat Lock protects individual chats, but for full privacy also consider locking WhatsApp itself with your phone's app-lock feature (many Android phones have this in Settings → Security → App lock).
  • Your fingerprint is the key. If someone doesn't have your fingerprint, they can't open the folder — but keep your phone's main screen lock strong too, since that's the fallback.

Fingerprint protecting a private chat
Chat Lock is genuinely useful for shared phones, work devices, or just peace of mind. It takes less than a minute to set up, and unlike third-party "chat hider" apps, it's built by WhatsApp itself — no extra app, no ads, no permissions to worry about.

Also read: WiFi Speed Slow? Check These 7 Real Settings Before Blaming Your Internet Provider

Do you use Chat Lock, or do you lock the whole WhatsApp app instead? Share what works for you in the comments.

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