1
Tap the "Gear" button. This can be found in the upper-right corner of the Kik message list.
2
Tap "Chat Settings". If you are using Windows Phone or Blackberry, tap "Privacy".
3
Tap "Block List". This will open a list of your currently-blocked users.
4
Tap the "+" to add a new user to your block list. This will open your list of contacts. You can select any of your contacts from the list to block them. You can also type a name or Kik username to block someone not on your contacts list. After typing the name, select it from the list of search results.
5
Confirm that you want to block the selected user. You will be prompted to confirm that you want to block the user you've selected.
- The user will not be notified that they have been blocked. Their messages to you will show as delivered but not read. You will not receive any messages they send.
- Blocking someone does not delete your previous chats from their device. Blocked users will still be able to see your profile picture and any changes you make to it.
- Blocked users will be able to see your messages if you are in the same group chat.
6
Unblock a blocked user. If you don't want to continue blocking someone, you can quickly remove them from your blocked list.
- Open the "Block List" in the "Chat Settings" menu.
- Tap the user you want to unblock.
- Tap the "Unblock" button to remove the block. The user will not be notified that you have unblocked them.
RESOURCE : WIKIHOW