Open the Phone app
Tap Recent calls or Call history
Find the spam caller
Tap the number or contact
Tap Block or Block/report spam
Confirm the block
Open the Phone app
Tap the three-dot menu
Tap Settings
Tap Blocked numbers
Turn on Unknown or private number blocking if available
Open the Phone app
Tap the three-dot menu
Tap Settings
Tap Caller ID and spam
Turn on See caller and spam ID
Turn on Filter spam calls
Open the Contacts app
Open the spam number
Tap More or the three-dot menu
Tap Block contact
Open Messages if the spam came by text
Open the conversation
Tap the three-dot menu
Tap Block and report spam
Use your carrier’s spam-blocking service or app
Install a trusted call-blocking app from Google Play
Keep Android and the Phone app updated
Report repeated spam numbers to your carrier
Report scam calls to your local consumer protection agency if needed