This is a very useful feature that can be used for meetings or when you do not wish to take telephone calls. If you would like to block all calls on your iPhone for a period of time, then you can set your iPhone to Do Not Disturb mode. How to block all calls on my iPhone for a period of time? If it is a spam call you will have filtered it out and can easily delete any messages they may have left you. Instead, any of the calls with no Caller ID will be sent directly to your voicemail, so if it is a legitimate call from someone, they can easily leave you a message. If the telephone number has been blocked or withheld by the caller, you will not receive the call. Once this feature is turned on you will still receive telephone calls when the telephone number is displayed. To block a telephone call where no Caller ID is displayed, go to Settings and then Phone and scroll down until you see Silence Unknown Callers, this is set to off by default, switch it to On. Luckily Apple has settings built into the iPhone that will block all No Caller ID calls with some simple settings changes. When you block a call from a telephone number that is displayed, this has to be done for each individual call. This guide will show you how to completely block these types of calls on your iPhone.

This is something that is used by companies trying to market things to you and also some of the robocall scam companies.

This guide is designed to show you how to easily block calls on your iPhone when the caller has no Caller ID on the telephone call. We previously found out how to block unwanted calls on the iPhone, but what about calls where there is no number calling you or the caller has hidden their telephone number?

How to block no caller id on iphone