Open the Phone app
Tap the three-dot menu
Go to Settings
Tap Caller ID and spam
Turn on See caller and spam ID
Turn on Filter spam calls
Open the Phone app
Go to Recents
Tap the spam number
Tap Block or Report spam
Open Contacts
Select the contact
Tap Block number
Open Settings
Tap Notifications
Tap Do Not Disturb
Allow calls only from contacts or favorites
Install your carrier’s spam-blocking app
Enable spam protection in the carrier app
Update your Android system
Update the Phone app
Remove your number from marketing lists
Register your number on your country’s do-not-call list
Use third-party call-blocking apps
Review blocked numbers regularly