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

ZDNET's key takeaways Use these codes to forward calls, pay your bill, check balances, etc.Some of the codes work only on certain carriers or devices.One of the codes also might erase your data, so ...

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 ...

You can block unwanted text messages on an Android phone by blocking the phone number with just a few taps.