User manual

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7.1.3. Block calls
Block feature does help to prevent unwanted phone calls. You can also add
numbers to blacklist to block specific phone numbers from calling.
Block calls. Go to [Settings] >[System Apps] > [Call] > [Block], or go to
[Settings] > [Security] > [Anti-harassment/Fraud]. Click [Block Calls], you’ll see
several options available for blocking incoming calls:

Block one-ring incoming calls

Block calls from hidden numbers

Block all unknown incoming calls (Do not block repeated incoming calls)

Block all incoming calls
Note: The unknown number refers to an unsaved real phone number, and your