Blocked contacts can't send you messages or
call you. If you feel disturbed by someone, you
may choose to block the contact.
1. To block a stranger that you don't add as
contact, please open the chat sent by unknown
contacts > click “ BLOCK” on the top
2. To block a friend in your contact list,
Please tap friend's profile picture
> Tap his profile picture again
> Enter his profile page
> Block.
If you want to unblock someone,
please enter [Me] page
> Security & Privacy
> Blocked Contacts
> Find the contact and click UNBLOCK.
After that, he will be removed from the block list.