How does Apple intercept virtual phones?

Apple intercepts virtual phone as follows:

1. Open the "Settings" of Apple's mobile phone: find and click the "Settings" application icon on the home screen.

2. Enter the "Phone" setting: scroll the page and click the "Phone" option.

3. Select "Shielding and Identification": On the phone settings page, find and click the "Shielding and Identification" option.

4. Turn on "Unknown Number Mask": On the "Mask and Identification" page, turn on the "Unknown Number Mask" switch to mask incoming calls with unknown or hidden numbers.