Blocking someone is a way of preventing them from seeing your timeline and your posts and banning them from tagging or inviting, messaging or adding you as a friend.
What if you accidentally block someone and want to unblock them?
This article will help you unblock your Facebook friend.
So they’ll still be unfriendly when blocking someone, and unblocking them won’t immediately add them as a contact.
How long are you waiting for someone to unblock on Facebook?
When you block somebody and unblock them then you have to wait 48 hours until you can make friends with them again.
2. Click “Block” on the left side of your Settings page.
3. Select the section called “Block users” and click the blue button “Unblock” next to the name of the person you want to unblock.
4. Click on “Confirm” to unblock the person officially.
The person on Facebook will not automatically become your mate. If you want to be friends with a person you have unblocked, you will have to give them an application for a friend again.
To unblock someone:
> Click (?) at the top right of any Facebook page
> Click Shortcuts on Privacy
> Click How can I stop somebody from harassing me?
> Click View all users that have been blocked.
> Press Unblock next to the unblocking person’s name.