How to Block Calls from Unknown Callers and No Caller ID on Your iPhone

I feel like our civilisation has already evolved to a point where we don’t accept a call unless we recognize the number or the name. Anything that’s an unknown number or doesn’t have a Caller ID, goes straight to voicemail. But this process is manual. What if we could automate this?

That would mean an end to telemarketers and robo callers. Wouldn’t that be awesome.
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How to Block Unknown Caller and No Caller ID Calls

We already know how we can manually block a phone number individually. This method is a bit more sophisticated. It’s a clever workaround using the underrated Do Not Disturb feature.
Once we enable this feature, your iPhone will not ring or vibrate when anyone that’s no in your contact book calls you.
Step 1: Open the “Settings” app on your iPhone and select “Do Not Disturb“.
Step 2: Toggle the “Manual” option. This will turn on Do Not Disturb. You’ll see the half moon icon in the status bar.

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Step 3: Tap on “Allow Calls From“. Now you have two options. If you tap on “Favourites“, all the contacts in your favourites list will be allowed (like your family and friends). If you choose “All Contacts“, anyone in your contact list will be able to call you. This is the better option as you won’t miss a call from people actually in your contact book.
And that’s it. Enjoy your peace of mind.