You can block or unblock a number on an Android phone using the built-in Phone app's "Blocked numbers" menu.

You can block a number on your phone so that a person or company can't call or text you from a particular number. Here's how ...

With the increasing number of unwanted calls and messages from spammers, telemarketers, and scammers, blocking numbers has become a crucial feature for maintaining peace and security on Android ...

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