If you have actually blocked someone accidentally or altered your mind about the block, though, it is also reversible. You can alter your Personal privacy settings to unblock and permit somebody back into your Facebook world.
Can You Unblock Someone On Facebook
1. Click the down arrow beside "Account" on top right of any page on Facebook.
2. Click "Personal Privacy Preferences" from the Account menu.
3. Click the "Edit Your Lists" link under the Block Lists heading. It is at the bottom center of the page.
4. Click the "Unblock" link beside the name of the person you desire to unclog. A list of the individuals you have actually obstructed is discovered under the Block Users area.
Idea
Unblocking somebody does not instantly put that individual back in your pal list. You should add the newly unblocked person as a pal and await them to validate the demand.
And one more thing please don’t forget to share this awesome trick to use the Can You Unblock Someone On Facebook with your friends.