How to block calls from private numbers?

Take the iphone8 as an example:

First, open the mobile phone desktop and click Settings, as shown in the figure:

Second, click Settings to open the do not disturb mode inside, as shown in the answer sheet:

Third, after clicking the Do Not Disturb mode, the startup will turn green, and then click the menu below to let these people call, as shown in the figure:

Four, click to allow these people to talk, click on all the contacts, as shown:

Extended data:

Android phone mode:

Taking oppoR9plus mobile phone as an example, the solution is as follows:

1, first click the phone icon in the mobile phone;

2. Click the phone icon in the mobile phone, and the call record will pop up on the page. Click the portrait icon in the lower left corner of the page;

3. After clicking the portrait icon in the lower left corner of the page, the page will jump to the contact person and click the individual in the lower right corner of the page;

4. Click on the individual in the lower right corner of the page, and then click Answer Harassment Interception;

5. After clicking the harassment interception, the page will pop up all the phone numbers that have been blocked by the blacklist, and long press the phone number that needs to be unsealed;

6. Long press the phone number to be unsealed, and several options will pop up at the bottom of the page. Click more;

7. After clicking More, click Cancel Blacklist in the drop-down option;

8. Click to cancel the blacklist, and a confirmation prompt will pop up on the page. Click OK;

9. After clicking OK, the page will mention "blacklist has been deleted", and at the same time, the call records and SMS records before this number will be restored, so that others will not be unable to get through when they call again.