
2023 Author: Gordon Kinson | [email protected]. Last modified: 2023-06-01 01:17
If you do not want to answer the calls of certain subscribers, you can block their phone numbers in the list of your contacts on the iPhone (detailed instructions on how the Blacklist on iPhone works). However, it would be great to go even further and block calls from all unknown subscribers and those whose number cannot be identified.

Many users prefer not to pick up the phone when they are called from an unknown number, but at the same time intrusive calls from unfamiliar phones sometimes interfere with the normal use of the smartphone.
As a rule, callers from the numbers "No subscriber ID" or "Unknown" are robots (of course, there are exceptions), employees of marketing departments trying to sell you something, etc., so getting rid of their annoying calls was would not be bad at all.

Below we will tell you how to block all unknown and undefined numbers on iPhone.
ATTENTION!!! Using it, you will receive calls only from subscribers from your contact list, so you risk missing an important call.
Method 1 (for iOS 13 and newer) How to block all calls from unknown callers on iPhone
In iOS 13, the developers solved this problem by adding a function to block incoming calls from numbers not added to the address book.
Actually, something similar could have been done on the iPhone before by activating the Do Not Disturb mode and allowing Call Allowing for selected contacts (more on that below), but now the function is activated literally in a couple of taps on the screen, and its use at certain time intervals quite convenient.
Why block incoming calls? For example, to discourage marketers. Quite often, after registering in not the most respectable online stores or services, the user's phone number gets into the databases of spam calls and text messages (by the way, text messages from unfamiliar numbers could have been banned back in iOS 10). In addition, the ban on unknown incoming calls will protect the child or pensioner from telephone scams, allow the debtor to avoid stressful conversations with collectors, etc.
It is quite simple to activate the function - just go to Settings, the Phone section, and activate the switch opposite the "Mute unknowns" item. After that, the person who will call you from an unknown number will hear short tones "Busy" in the receiver.


It is especially pleasant that after the muted call your iPhone will receive a notification in the form of a missed call, and if the number seems familiar to you, you can simply call it back.

When the "Mute unknowns" option is enabled, incoming calls will continue to come from people from contacts, Siri suggestions, as well as from those whom you recently called.
BY THEME: How to enable the identifier of unknown numbers on the iPhone for free.
Method 2 (for iOS 7 - iOS 12) How to block on iPhone all calls from unknown and undetectable (hidden) type "No subscriber ID" or "Unknown" numbers
This method is not a standard blocking of subscribers on the iPhone, but a clever use of the Do Not Disturb mode and the contact list. So how it works:
- Open the Settings app on your iPhone and select Do Not Disturb.
- Move the toggle next to Do Not Disturb to the Enabled position.

A crescent will appear on the screen in the status bar (where the clock is), after which the device will not make absolutely any sounds

Click on "Allow Calls" and you will be presented with two options. Select From Favorites if you only want to receive calls from your favorites. This option is suitable for users who have added to Favorites (instructions for adding) the numbers of all friends and family members (most importantly, do not forget to add the necessary contacts to Favorites) and never receive calls from other numbers

Select the "All contacts" option or a contact group (we described how to create contact groups on the iPhone here and here), then you will receive calls from all subscribers from the contact list. However, those who have not been added to your address book will not be able to get through

Before using this method, carefully consider whether someone will call you on an important issue from a number that is not included in your contact list. If you are sure of your decision, feel free to close the "Settings" and enjoy the silence. Whereas the callers will always be busy in the receiver.
BY THEME: What happens to calls and SMS when you are in Do Not Disturb mode on your iPhone or iPad.
When is the best time to use this opportunity?
The Do Not Disturb feature activates a completely silent mode on iPhone and mutes not only calls, but also notifications. It is best to set your watch when it activates automatically. For example, every evening at a certain time, the iPhone will go into silent mode, and then return to normal mode every morning. Of course, you can configure the function so that the smartphone remains silent around the clock.
It is also recommended that you enable repeat calls in Do Not Disturb mode. If someone rings twice within three minutes, the call will not be muted. Users who do not have a contact list or "Favorites" should not use the method described above, otherwise they will not receive calls from anyone at all.
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See also:
- Apple Music family account, or how to listen and download any music on iPhone, iPad and Mac for 45 rubles per month.
- How to upload photos and videos to the cloud from iPhone or iPad to free up space.
- How to properly shade secret data in iPhone screenshots so that they cannot be seen.