How To Restrict Friend On Facebook
When you include a friend to your Restricted List, they won't see any of your future posts unless they are tagged in the posts or the posts have a "Public" privacy setting.
Here's how to include users to your Restricted List in the Facebook mobile application. Note: These screenshots were caught in the Facebook app on iOS.
Action 1: Go the profile of the user you wish to include to your Restricted List. You can get there by looking for the user manually, or by tapping on their name on a post or remark they have actually shared.
Action 2: Tap the "Friends" button under the user's name.
Action3: Tap "Edit Pal Notes."
Action 4: Scroll to the bottom of the list, and tap "Limited" to include a check mark to this row.
Before:
After: