You should already have a Facebook tab available on your screen. Just tap it and follow the prompts. If there is no Facebook icon, go into the Google Play store and install it from there.
They may have it locked up so tight that you need to be an administrator to unblock it. Maybe use the time you've spent trying to unblock Facebook and devote...
Go to setting and select blocked and whoever you want to unblock. There will be a tab that says unblock, select that and you can send them a friend request.
Go to your Facebook settings and click on the Blocking button. Scroll through the list of blocked users until you find your friend's name. Press the Unblock button. You will...