Before we start
Do you constantly receive annoying calls from unknown numbers? Want to stop them from ever troubling you again? Then learn how to block a number on iPhone. You can either block contacts from your iPhone’s default Phone app or use the Call Blocker app.
If telemarketers, scammers, robots, and stalkers obtain your phone number, they may cause you a great deal of distress. Unwanted calls are, at best, inconvenient. At worst, they can endanger you and severely disturb your everyday life.
Fortunately, there are numerous methods to block calls from unknown caller id. Here we will discuss the best ways on how to block a phone number on your iPhone.
How to block a number on iPhone using the Call Blocker app
The iPhone does have its own call blocking feature. However, it isn’t enough to stop those unwanted callers. A third-party call blocking app is the best solution if spammers or robocallers constantly plague you.
The Call Blocker app is famous for stopping unsolicited calls by screening phone numbers for spam. This is because it has a categorized spam list, its own database of spammers, and many more. So, if you’re interested in how to stop spam calls on iPhone, then follow the steps below.
Step 1: Download the Call Blocker app

There are a number of call blocking applications you can download from the App Store. However, the Call Blocker app is the best among them. So, if you haven’t already, then download the app for free.
Step 2: Block unknown callers

Follow the simple steps below to block phone numbers or contacts on your iPhone:
When you ban someone, their phone number is placed on the Blocklist. They will never be able to contact you or leave you a message. If you know someone but dislike them, you can add them to this blocklist. You can even unblock a phone number just as easily. Just go to the Blocklist tab on the Call Blocker app, then select the number and tap on Unblock.
Step 3: How to block spam calls on iPhone

The Call Blocker for iPhone contains a large database of spammers, robocallers, and telemarketers’ phone numbers acquired from users’ spam lists and other call blocker registries. As a result, you will be promptly alerted if you receive a call from a number on your spam list or in the database.
To stop spam calls, go to the Spam List tab on the Call Blocker app and tap on the (+) button on the top-right screen. Then enter the phone number(s) on your personalized list. You can also categorize the types of spam on the numbers added to the list. So, marking a phone number as spam will automatically detect subsequent calls from that flagged number.
How to block a number on iPhone from the Phone app
Your iPhone has an inbuilt call blocking option, which you can use as your first line of defense. You can easily block numbers, messages, emails, and voicemails on your iPhone with this feature. This guide will demonstrate how to block a phone number on iPhone so that you no longer get calls, FaceTime calls, or texts from that number.
How to block phone numbers, texts, or contacts on your iPhone?
The process of blocking someone from Phone, FaceTime, Message, and Mail is almost similar. If you block a number from anyone on one of the app, it will be blocked for all four apps. It is not necessary to repeat the same procedure of blacklisting a phone number for multiple apps.
Phone App

FaceTime App

Message App

How to unblock phone numbers on iPhone
You may quickly remove a number from the blocklist if you change your mind. It doesn’t matter whether you deleted a number from your Phone, Message, or FaceTime. There is only one block list on your iPhone to manage all the numbers you don’t want a call from.

In short
One thing you may learn from this article is that if you want to stop someone from calling you, you can do so easily. You can block their number with or without the use of third-party call blocking apps.
However, it is always advisable to have a better guard against a call from an unknown caller id. What else matters is keeping all your important passwords safe. Let Password Manager: Passkit protect and manage all your passwords on your iPhone.