From within the Settings app, scroll to and tap Apps.
Scroll to and tap Messages.
Scroll to Blocked Contacts.
Tap Blocked Contacts.
Tap Add Blocked Contact.
Enter the name or phone number of the contact you'd like to block, then select it.
Tap Block Contact.
When a contact is blocked, you'll no longer receive phone calls, messages, or FaceTime from them.
To unblock a contact, tap Edit.
Tap the Minus sign icon.
Tap Unblock.
You've completed the steps!
