How does Apple's mobile phone hack other people's numbers?

If you want to hack someone else's phone number, you will usually open the phone and address book, select a friend who needs to hack, and click to block this incoming number. Or open the settings, phone, click on the call interception and identification, and prevent the contact from pulling the black number. Then, you can blacken the other party by the following operations:

Turn on the phone

First find the Phone icon on the iPhone home screen, and then click Open.

Click on recent calls.

Click the Recent Calls option at the bottom of the screen, and then click the exclamation mark icon to the right of the phone number you want to blacklist.

Block this incoming number

In the phone number profile, swipe your finger up on the screen, find the "Block this incoming number" option at the bottom, and then click Add.

Block contacts

Then the system will prompt that the phone, information and FaceTime of this number will be blocked, and click "Block Contact" to confirm the blocking. After joining, when the other party dials again, it will not come in.

Unlock this call number.

To unblock, click Unblock this calling number at the bottom of the contact details.