How do I lock my profile on Facebook?

If you see the lock symbol Facebook Lock Symbol on someone’s profile, that person has chosen to lock their profile and show a limited view of their profile content to people they are not friends with on Facebook.

When someone locks their profile, only their friends will see the following:
  • Photos and posts on their timeline.
  • Their full size profile picture or cover photo.
  • Their Stories.
  • New posts and photos.

In addition:

  • Any posts they’ve shared in the past to Public will change to Friends.
  • Timeline review and tag review will be turned on.
  • Only a portion of their About info will be visible to everyone on their profile.
Other ways to manage your privacy:
If locking your profile isn’t available to you, you can control your privacy in other ways through your privacy settings:


Source: FB