How to use Facebook Profile Lock?
1. First of all open your Facebook account in facebook or lite app.
2. Then click on the 3 lines menu and select the Settings option.
3. Then you will get a lot of options, you have to select ‘Profile Locking’ in the Privacy section.
4. Then click on ‘Lock Profile’.
Just after this your facebook profile will be locked. Now if you want to unlock it back then you can also unlock your profile by going back to this option.
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