Open the Phone app
Tap the Recent calls tab
Tap the number you want to block
Tap Block or Block/report spam
Confirm the block
Open the Phone app
Tap the three-dot menu
Tap Settings
Tap Blocked numbers
Tap Add a number
Enter the number
Tap Block
Open the Contacts app
Select the contact
Tap the three-dot menu
Tap Block numbers or Block contact
Confirm the block
Open the Phone app
Tap Settings
Tap Caller ID and spam
Turn on Caller ID and spam protection
Turn on Filter spam calls
Open the Phone app
Tap Settings
Tap Blocked numbers
Turn on Unknown callers if available
Open the Messages app
Open the conversation from the number
Tap the three-dot menu
Tap Block
Confirm the block
Open the Phone app
Tap Settings
Tap Do Not Disturb
Allow calls only from selected contacts if needed
Open the carrier app or website
Sign in to your account
Enable call blocking or spam protection features