Step 1

Open Settings

Step 2

Tap Phone

Step 3

Tap Silence Unknown Callers

Step 4

Turn on Silence Unknown Callers

Step 5

Open the Phone app

Step 6

Tap Recents

Step 7

Tap the info icon next to the spam number

Step 8

Tap Block Caller

Step 9

Tap Block Contact

Step 10

Open Messages

Step 11

Tap the spam message

Step 12

Tap the sender name or number

Step 13

Tap Info

Step 14

Tap Block Caller

Step 15

Open Settings

Step 16

Tap Phone

Step 17

Tap Call Blocking & Identification

Step 18

Turn on your carrier’s spam-blocking app

Step 19

Install a trusted call-blocking app from the App Store

Step 20

Enable the app under Call Blocking & Identification

Step 21

Contact your carrier to enable spam call protection

Step 22

Register your number with the National Do Not Call Registry

Step 23

Avoid answering unknown numbers

Step 24

Avoid calling back suspicious numbers

Step 25

Report spam calls to your carrier

Step 26

Report spam calls to the FTC at reportfraud.ftc.gov

How To Block Spam Calls On iPhone?

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