How to hack SMS numbers

(Take OPPO R 1 1 as an example) Click to open the phone book.

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Select the mobile phone number that needs to be blacked out.

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Enter the mobile phone number details interface and click "Add Blacklist" below.

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Confirm the blacklist. Add the mobile phone number to the blacklist.

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After the number is successfully added to the blacklist, the mobile phone number will automatically jump to "Remove from the blacklist". Click "Remove from the blacklist" to remove the mobile phone number from the blacklist.