How to block, delete and unblock friends
Blocking and Deleting Friends
1. Tap the name of the friend you want to edit in the My Friends page.
2. Press the gear icon (settings) that appears next to his/her name.
3. Press Block to prevent them from sending you Snaps or viewing your Stories.
4. Press Delete to remove them from your friends list
5. To unblock someone you’ve blocked, scroll to the bottom of your friends list, tap the gear (settings) and then tap Unblock. They will be returned to their original position on your friends list.