Features are provided on smartphones to avoid spam phone calls or bluff calls. This allows you to block the phone numbers of people you don't like or the number of unwanted calls and messages. After blocking someone's phone number, no phone call, message or facetime request comes from that number. There are different steps to block numbers on iPhone. 1. Block numbers in iPhone's phone app - Click on the phone app. - Click on Recent Options. - Find the number you want to block and click on the i (i) icon in the circle next to the number on the right side of the screen. - Scroll down the screen and click on 'Block This Color' written in red at the very end. 2. Block numbers from iPhone's Messages app If someone is abusing you via text message and you want to get rid of it, you can block that person's number directly from the iPhone's messaging app. - Go to the message app and open the message of the person who is massaging you. - Click on th...