How does Apple 6 set up to block calls from unknown numbers?

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First, find the "Phone" icon on the iPhone home screen, click Open,

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Here, take the phone number in recent calls as an example. Click the "Recent Calls" option at the bottom of the screen, and then click the "exclamation mark" icon on the right side of the phone number to be blacklisted.

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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.

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Then the system will prompt us to block the phone number, information and FaceTime, and click "block contact" to confirm the blocking. After joining, when the other party dials again, it will not come in.

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

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In addition to directly blacklisting strange harassing calls, we can also blacklist spam messages. First open the information application, click Open Spam Message, and then click the "Contacts" option in the upper right corner of the screen.

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Then click the "Introduction" option,

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Next, on the introduction page, click the "Block this calling number" option at the bottom.

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The system will prompt us to block the phone, information and FaceTime of this number, and click "Block Contact" to confirm the blocking. So we can stop spam.