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

Blocking a phone number or contact on your iPhone is easy to do, and it's equally easy to unblock that blocked number or ...

When you block a number on your Android phone, it will no longer be able to call or text you. This can be a useful way to avoid spam calls and unwanted messages. However, you may sometimes need to ...